1. No category

SAMPLE PAPER - 1
BLUE PRINT
BIOLOGY THEORY
CLASS XI
S. No
1
2
3
4
5
Type of
questions/units
Diversity in
living world
Structural
organization in
animals and
plants
Cell-structure
and function
Plant physiology
Animal
physiology
OTBA
Total
VSA (1
mks)
1-1
SA I(2
mks)
2-1
SAII (3
mks)
3-1
LA (4
mks)
LA (5
mks)
Weighatage
-
-
6-3
1-1
-
-
4-1
5-1
10-3
1-1
2-1
9-3
2-2
2-1
-
9-3
9-3
5-5
4-2
10-5
6-2
36-12
12-5
4-1
5-1
5-1
16-5
16-6
15-3
10-4
70-26
SUBJECT-BIOLOGY –XI
TIME-3 HOURS
F.M-70
PART-1
Answer all the questions according to the instructions given.
Part -1 contains the subject based -60 marks, and
Part -2 contains OTBA of -10 marks
SECTION-A (1*5) = 5
1- What is the name of the first segment of Earthworm?
2- What is radula? Which organism possesses this?
3 Which is the only organelle found in the Prokaryotic cell?
4-What are chylomicrons?
5-What is the role of carbonic anhydrase in respiration?
SECTION- 2*3 = 06
6-What is Synapsis? When and where does it occur?
7-What is hydroponics? Give one application of this technique.
8-What is clitellum? What is its role? Or how is Botanical garden useful for scientists?
SECTION-C 3*10 = 30
09-Describe the water potential briefly. Mention the factors affecting it..
10-- Match the following:
(i) Operculum
(a) Ctenophora
(ii) Parapodia
(b) Mollusca
(iii) Scales
(c) Porifera
(iv) Comb plates
(d) Reptilia
(v) Radula
(e) Annelida
(vi) Hairs
(f) Cyclostomata and Chondrichthyes
(vii) Choanocytes
(g) Mammalia
(Viii) Gill slits
(h) Osteichthyes
OR
i-Name the cell that lines the spongocoel in Sycon.
Ii-The term given to the middle gelatinous layer of the body wall of Hydra isIii-Name the cnidarians that has both polyp and medusa form.
11- what are co-factors? Describe any 2 of them w.r.t enzymes.
12-What is centromere? How does the position of the centromere form the basis of classification of chromosomes?
OR
Name the stage of cell cycle at which one of the following events occur:
(i) Chromosomes are moved to spindle equator.
(ii) Centromere splits and chromatids separate.
(iii) Pairing between homologous chromosomes takes place.
13- Give the structural formula of a) Glycine, b) Alanine and c) Serine. OR Draw a diagram of mitochondrion with
at least 6 libeling’
14-
.
What are porins? Mention the type of transport that occurs along with the marking regions in the figure above?
15- Tarun asked his father Braun who is working in his village as a teacher. He told him that he was confused
about certain things: when I am putting a piece of stem cut from a potted plant it shrinks down but in fresh water it
swells up.
(a) Why this happens?
(b) Can any object show this phenomenon?
(c) What happens to the cell when this happens?
16-. Answer briefly:
(a) Why are villi present in the intestine and not in the stomach?
(b) How does pepsinogen change into its active form?
(c) What are the basic layers of the wall of alimentary canal?
17- Describe the conducting system of heart
18- Give a brief account of:Mechanism of synaptic transmission with lable diagram
SECTION –D
(1*4)
19i-What is a radial bundle. Give one example.
ii-Where do you found exarch and an endarch xylem condition?
Iii-Name 2 semi-autonomous organelle in the cell.
iv-How a hypogynous condition differs from epigynous one?
SECTION –E
(5*3 =15)
19-Explain the process of gaseous exchange in human being with respect to chloride shift or
Answer the following:i-How conducting system in heart is operated?
ii-What is coronary artery disease? Explain the cause and impact.
20-Draw & explain the floral diagram and reproductive character of the family Fabaceae and write its floral formula.
Write the scientific name of two plants of it used for economical purpose.
OR
Define the terms: a-zygomorphic b-aestivation, c-phyllotaxy d-palmate reticulate venation, and e-rhizome.
21-What is Hatch Slack pathway?Mention the special anatomical modification carried out in this plant.How a C3
plant differs from a C4 plant? OR Explain the mechanism of phloem transport in plants
PART-2
Fish – 102 species of fish are listed for the Western Ghats water bodies. Western Ghats streams
are home to several brilliantly coloured ornamental fishes like Red line torpedo barb, Redtailed
barb, freshwater puffer fish and marine forms like mahseers such as Malabar mahseer.
 Birds – There are approximately 510 bird species. Most of Karnataka's five hundred species of
birds are from the Western Ghats region alone. There are at least 16 species of birds endemic
to Western Ghats, including the vulnerable Nilgiri Wood-pigeon, Broad-tailed Grass bird,
nearly threatened, Grey-breasted Laughing thrush and Malabar Parakeet, Malabar Grey
Hornbill.
 Ins e cts – There are roughly 6,000 insect species from Kerala alone. Of 334 butterfly species
recorded from the Western Ghats, 316 species have been reported from the Nilgiri Biosphere
Reserve.
 Mollus cs – Seasonal rainfall patterns of the Western Ghats necessitate a period of dormancy
for its land snails, resulting in their high abundance and diversity, including at least 258
species of gastropods from 57 genera and 24 families.
Figure–6: Comparative account of animal species found in Western Ghatsz
http://photos1.blogger.com/blogger2/7080/1125107647414726/1600/chart.jpg
The area is ecologically sensitive to development and was declared an ecological hotspot in 1988
through the efforts of ecologist Norman Myers. Though this area covers barely five percent of
India's land, 27% of all species of higher plants in India (4,000 of 15,000 species) are found here.
Almost 1,800 of these are endemic to the region. The range is home to at least 84 amphibian
species, 16 bird species, seven mammals, and 1,600 flowering plants which are not found elsewhere
in the world.
Identification of ‘Key Biodiversity Areas (KBAs)’ has been initiated in Western Ghats. At present,
there are 137 Protected Areas (PAs) (47,208 sq km) in the Indian Himalayan Region (IHR) and 88
PAs (13,695 sq km) in Western Ghats. Over the years, there has been a steady progression in
number and area covered under the PA network in both the regions. Multi-ethnic composition
within the mountain ecosystems makes it a distinct microcosm of biodiversity. Human
interventions, including developmental activities and rampant poverty are leading to change in
land use patterns, habitat loss and fragmentation in the IHR. Similarly, in Western Ghats, in the past,
selective logging, and conversion to agriculture and cash crop plantations, river valley projects, etc.,
have contributed to the decline of biodiversity. Of late, mass tourism, unsustainable land use
practices, excessive subsistence dependence on forests, etc., are major challenges.
The Government of India established many protected areas including two biosphere reserves,
13 National Parks to restrict human access, several Wildlife Sanctuaries to protect specific
endangered species and many Reserve Forests, which are all managed by the forest departments of
their respective state to preserve some of the eco regions that are still undeveloped. Many National
Parks were initially Wildlife Sanctuaries. The Nilgiri Biosphere Reserve comprising 5500 km² of the
evergreen forests of Nagarahole, deciduous forests of Bandipur National Park and Nugu in
Karnataka and adjoining regions of Wayanad, Mudumalai National Park and Mukurthi National
Park in the states of Kerala and Tamil Nadu has the largest contiguous protected area in the
Western Ghats. The Western Ghats is home to numerous serene hill stations like Munnar, Ponmudi
and Waynad. The Silent Valley National Park in Kerala is among the last tracts of virgin tropical
Evergreen forest in India.
Answer the following Questions
1. Purple frog, Malabar mahseer and tiger are some animals that inhibit Western Ghats. Write down two
characteristic features of each that help in their classification into different classes. How can these animals be
protected from becoming extinct?
2. Western Ghats is home to at least 84 amphibian species, 16 bird species, 7 mammals and 1600 flowering
plants which are not found elsewhere in the world. The region is showing such a great endemism that can’t be
ignored. Suggest some measures needed to be taken to protect rare and endemic species from the danger of
extinction. Give one example of endemic species from each category mentioned. How can you help in creating
awareness among masses for biodiversity conservation in own country?
3. (a) Enlist a few human interventions in Western Ghats.
(b) With increasing human population coupled with increasing consumption, our ability to harm the biodiversitydeliberately or inadvertently is constantly increasing. Justify.
4. Why the Western Ghat has considered as a hotspot? What are the endemic species of mammals found in this
region which are declared critically endangered by IUCN data? Is the Ex-situ conservation useful in protecting
them?
MARKING SCHEME
SECTION-A
(1*5) = 5
1-Peristomium
2-rasping organ,snailetc.
3-ribosome
4-Protein coated fatty droplets
5-breaking of carbonic acid
SECTION- 2*3 = 6
6-pairing of homologous chromosome
Zygotene, prophase-1 meiosis.
7-Soil less growth
Any one application
8-prominent dark bands of glandular tissue. Forms the egg case/cocoon
SECTION-C 3*10 = 30
9-Correct answer
10-- Match the following:any six
(i) Operculum
f
(a) Ctenophora
(ii) Parapodia
e
(b) Mollusca
(iii) Scales
d
(c) Porifera
(iv) Comb plates
a
(d) Reptilia
(v) Radula
b
(e) Annelida
(vi) Hairs
g
(f) Cyclostomata and Chondrichthyes
(vii) Choanocytesc
(g) Mammalia
(Viii) Gill slits
h
(h) Osteichthyes
OR
i-pinachocytesand choanocytes
Ii-mesoglea
Iii-hydra, adamsia,obelia
11—correct answer
1
0.5*2
1
1
1
1,
½*2
1
1
1+1
2+1
6*0.5
1.
1
1
1+ 2
12-functional part of the chromosome by which the arms gets attached1.
Acrocentric, telocentric ,metacentric, sub metacentric
½*4
Or
(i) Metaphase(ii) anaphase.(iii) Zygotene
1*3
13-For correct formula/structure
1*3
Or
Six labellings
½*6
14-correct defn 1?Carrier protein, uniport, antiport, symport
1/2*4
15- (a) this is due to change in concentration the cells.
(b) Every object shows this phenomenon.
(c) Change in the shape, size, of the protoplast due to endosmosis or exosmosis.
1*3
16-i-TO increase the absorptive surface area
1
ii-by HCL
1
iii-serosa,submucosa,muscularis,mucosa
1
17- correct answer
3
18-correct labelling and explanation
1.5*2
SECTION –D
(1*4)
I-vascular tissues in alternate radii ½,,example-1/2
Ii-root ,stem
½*2
Iii-chloroplast,mitochondria
½*2
iv-at least one diference
½*2
SECTION –E
(5*3 =15)
19-correctanswer 5.
OR
correctanswer
i-2marks,
ii-1+1+1 marks
.
20-explain 1 , floral diagram- 1 floral formula -1. scientific name of two plants -1 economical purpose 1.
OR
Correct definition
1* 5.
21- correct answer 5.
OR Correct answer 2+3
PART-2
1. Any two features of amphibian (purple frog), pisces(mahseer) and mammals(tiger).
1+1
Any two ways of conservation
2. Any two measures
1+1
Amphibian- Purple frog Bird- Malabar Parakeet, mammal- lion tailed macaque, AngiospermsAny two measures
3.(a) developmental activities, conversion into agricultural and cash crop plantations, river valley projects etc
1.5
B-correct justification
1.5
4. (i) Explanation of Hotspot/region with high level of species richness and endemism.
1*3
(ii) Any two critically endangered animals
(iii) Conducting breeding programme under optimal conduction/ keeping them in zoo/germ-plasm preservation
etc.
SAMPLE PAPER 2
BIOLOGY THEORY
CLASS- XI
TIME-3 HOURS
SUBJECT-BIOLOGY –XI
PART-1
Answer all the questions according to the instructions given.
Part -1 contains the subject based -60 marks, and
Part -2 contains OTBA of -10 marks
SECTION-A (1*5) = 5
1 Which factor affects reproduction in seasonal breeders both in plants as well as animals? 1
2- Mention the ploidy of following: ---(i) Protonema of Moss.
(ii) Endosperm of Angiosperms.
3 Name the enzyme that increase the rate of reaction for the formation of H 2CO3 in human body.
4- Succus entericus is the name given to.
5- What is the importance of plasma proteins?
SECTION-B 2*3 = 06
6- Name the stage of cell division and cell cycle at which one of the following events occur: 2
(i)
Chromosome is moved towards equator.
(ii)
Centromere split and chromatid separate.
(iii)
Crossing over between homologous chromosomes.
(iv)
DNA replication takes place.
7-Mention the deficiency symptoms of chlorine and magnesium?
8- What is “metagenesis” .Which group of animals possess this?
2
SECTION-C 3*10 = 30
09-Give example(s) of:
(a) Hyperglycemic hormone and hypoglycemic hormone
(b) Blood pressure lowering hormone
(c) Gonadotrophic hormones
F.M-70
1
10 Answer briefly:
(a) How do you perceive the colour of an object?
(b) Which part of our body helps us in maintaining the body balance?
(c) How does the eye regulate the amount of light that falls on the retina?
OR
Draw the diagram of a sarcomere of skeletal muscle showing different regions...
11 Name the following:
(a) A chordate animal having flame cells as excretory structures
(b) Cortical portions projecting between the medullary pyramids in the human kidney
(c) A loop of capillary running parallel to the Henle’s loop.
12-Seema was silently sitting in her classroom after their field trip. Rashmi her close friend asked the reasons for
uncomfort. Seema narrated that some plants are green and others colourful and some stems also appear green.
(a) Why they appear differently?
(b) Whether the green stem and leaf doing the same function?
(c) What are the values shown by Seema?
OR
How does the position of centromere form the basis of classification of chromosome.Describe it with the help of
diagram.
13- Which is known as power house of the cell ? Describe it with the help of diagram.
3
14-(a) Why the female gametophyte of selaginella is considering as precursor of seed habit?
(b) What are types of root in cycas?
15- Describe competitive inhibition with example
16-. Briefly describe water potential. What are the factors affecting it?
17-Which of the following statements are true? If false, correct them:
(a) Boron deficiency leads to stout axis.
(b) Every mineral element that is present in a cell is needed by the cell.
(c) Nitrogen as a nutrient element is highly immobile in the plants.
18- Give comparison between the following:1.5*2
(a) C3 and C4 pathways
(b) Cyclic and non-cyclic photophosphorylation
SECTION –D
(1*4)
19i-Write down the floral formula of members of liliaceous family.
ii-Differentiate between bone and cartilage.
SECTION –E
(5*3 =15)
20- Explain the process of secondary growth in the stems of woody angiosperms with the help of schematic
diagrams. What is its significance?
Or
Answer in one word or one line.
(i) Give the common name of Periplanata americana.
(ii) How many spermathecae are found in earthworm?
(iii) What is the position of ovaries in cockroach?
(iv) How many segments are present in the abdomen of cockroach?
(v) Where do you find Malpighian tubules?.
21- Give the schematic representation of an overall view of Krebs’ cycle..
OR
Which one of the plant growth regulators would you use if you are asked to:
(a) induce rooting in a twig
(b) quickly ripen a fruit
(c) delay leaf senescence
(d) induce growth in axillary buds
(e) ‘bolt’ a rosette plant
(f) induce immediate stomatal closure in leaves
22- Diagrammatically indicate the location of the various endocrine glands in our Body and one hormone released
from it.
Or
Discuss the main steps in the digestion of proteins as the food passes through different parts of the alimentary
canal.
PART-2
 Fis h – 102 species of fish are listed for the Western Ghats water bodies. Western Ghats streams are home to
several brilliantly coloured ornamental fishes like Red line torpedo barb, Redtailed barb, freshwater puffer fish and
marine forms like mahseers such as Malabar mahseer.
 Birds – There are approximately 510 bird species. Most of Karnataka's five hundred species of birds are from
the Western Ghats region alone. There are at least 16 species of birds endemic to Western Ghats, including the
vulnerable Nilgiri Wood-pigeon, Broad-tailed Grass bird, nearly threatened, Grey-breasted Laughing thrush and
Malabar Parakeet, Malabar Grey Hornbill.
 Ins e cts – There are roughly 6,000 insect species from Kerala alone. Of 334 butterfly species recorded from the
Western Ghats, 316 species have been reported from the Nilgiri Biosphere Reserve.
 Mollus cs – Seasonal rainfall patterns of the Western Ghats necessitate a period of dormancy for its land snails,
resulting in their high abundance and diversity, including at least 258 species of gastropods from 57 genera and
24 families.
Figure–6: Comparative account of animal species found in Western Ghatsz
http://photos1.blogger.com/blogger2/7080/1125107647414726/1600/chart.jpg
The area is ecologically sensitive to development and was declared an ecological hotspot in 1988 through the
efforts of ecologist Norman Myers. Though this area covers barely five percent of India's land, 27% of all species
of higher plants in India (4,000 of 15,000 species) are found here. Almost 1,800 of these are endemic to the
region. The range is home to at least 84 amphibian species, 16 bird species, seven mammals, and 1,600
flowering plants which are not found elsewhere in the world. Identification of ‘Key Biodiversity Areas (KBAs)’ has
been initiated in Western Ghats. At present, there are 137 Protected Areas (PAs) (47,208 sq km) in the Indian
Himalayan Region (IHR) and 88 PAs (13,695 sq km) in Western Ghats. Over the years, there has been a steady
progression in number and area covered under the PA network in both the regions. Multi-ethnic composition
within the mountain ecosystems makes it a distinct microcosm of biodiversity. Human interventions, including
developmental activities and rampant poverty are leading to change in land use patterns, habitat loss and
fragmentation in the IHR. Similarly, in Western Ghats, in the past, selective logging, and conversion to agriculture
and cash crop plantations, river valley projects, etc., have contributed to the decline of biodiversity. Of late, mass
tourism, unsustainable land use practices, excessive subsistence dependence on forests, etc., are major
challenges. The Government of India established many protected areas including two biosphere reserves, 13
National Parks to restrict human access, several Wildlife Sanctuaries to protect specific endangered species and
many Reserve Forests, which are all managed by the forest departments of their respective state to preserve
some of the eco regions that are still undeveloped. Many National Parks were initially Wildlife Sanctuaries. The
Nilgiri Biosphere Reserve comprising 5500 km² of the evergreen forests of Nagarahole, deciduous forests of
Bandipur National Park and Nugu in Karnataka and adjoining regions of Wayanad, Mudumalai National Park and
Mukurthi National Park in the states of Kerala and Tamil Nadu has the largest contiguous protected area in the
Western Ghats. The Western Ghats is home to numerous serene hill stations like Munnar, Ponmudi and Waynad.
The Silent Valley National Park in Kerala is among the last tracts of virgin tropical Evergreen forest in India.
Answer the following Questions
1. What has put many species of Western Ghats in danger of extinction?
2. Western Ghats is home to at least 84 amphibian species, 16 bird species, 7 mammals and 1600 flowering
plants which are not found elsewhere in the world. The region is showing such a great endemism that can’t be
ignored. Suggest some measures needed to be taken to protect rare and endemic species from the danger of
extinction. Give one example of endemic species from each category mentioned. How can you help in creating
awareness among masses for biodiversity conservation in own country?
3. “ Power generation should not happen at the cost of ecological security”. Comment on the statement in relation
to development of Hydel Projects in Western Ghats.
4. Why the Western Ghat has considered as a hotspot? What are the endemic species of mammals found in this
region which are declared critically endangered by IUCN data? Is the Ex-situ conservation useful in protecting
them?
PART-1
SECTION-A (1*5) = 5
QUESTION NO
1234
MARKING SCHEME
ANSWER
Photoperiod
Haploid, triploid
Carbonic anhydrase.
Intestinal juice
MARKS ALLOTED
1
½*2
1
1
5
SECTION-b
6
7
8
(2*3) = 6
SECTION-C
9
10
(3*10) = 30
11
Transportation of gases
1
Metaphase,anaphase,pachytene,s-phase
Chlorosis, nongreen leaves
Alternation of generation in cnidarian,coelenterata
½*4
1*2
1+1
a-Glucagon, insulin b-nor adrenaline c-LH,FSH
rods and cones, b-vestibular apparatus-diaphragm-iris or
diagram
a-amphioxus-renal col of bertini,c-vasa recta
1*3
1*3
(a) Due to presence of different types of plastidschloroplast,
chromoplast,
leucoplast.
(b) Yes.
(c) Observation, awareness, critical thinking.
or
Metacentric, sub metacentric, acrocentric and telocentric.
,Diagram
12
1*3
1*3
3
1+2
Mitochondria ,diagram, description
The embryo develops inside the female gametophyte,
selaginella is hetrosporous.
Tap root and coralloid root
Correct description, Example. Refer to NCERT page no
158.
Correct answer and two factors
a-true ,b-not needed regularly, c- mobile
correct difference
13
14
15
16
17
18
SECTION-D
19
(1*4) = 4
SECTION-E
20
(5*3) = 15
21
2+1
3
2+1
1+1+1
1.5*2
correct difference for a ,b
2+2
For correct answer
Or
a-American cockroach, b-4 pairs ,c-between 12 and 13 th
abdominal segments d-10 ,e-part of alimentary canal
Correct representation
or
Auxin,ethylene ,cytokinin,cytokinin,GA,ABA
5 or1*5
5
1*5 any five
22
Correct diagram,hormones released
Or
Correct process
2.5*2
5
PART-2
1. Factors
1+1
2. Any two measures
1+1
Amphibian- Purple frog Bird- Malabar Parakeet, mammal- lion tailed macaque, Angiosperm
Any two measures
3 discuss the problem
3
4. (i) Explanation of Hotspot/region with high level of species richness and endemism.
1*3
(ii) Any two critically endangered animals
(iii) Conducting breeding programme under optimal conduction/ keeping them in zoo/germ-plasm preservation
etc.
SAMPLE PAPER 3
BIOLOGY THEORY
CLASS- XI
CLASS X1
BIOLOGY (THEORY)
Time Allowed:3 1/2 Hrs
Max Marks :70
1.All questions are compulsory.
2. The question paper consists of 4 sections ,A,B,C,D and E ,Section A contains 5 questions of 1 mark each
,section B is of 10 questions of 2 marks each , section C is of 10 questions of 3 marks each and section D is of 3
questions of 5 marks each. Section E contains 2 questions of 3 marks each and 1 question of 4 marks
3. There is no overall choice, however ,an internal choice has been provided in all the three questions of 5
marks weightage. A student has to attempt only one of the alternatives in such questions
4. Wherever necessary, the diagrams drawn should be neat and properly labelled
PART 1
SECTION A
1.
2.
3.
4.
5.
Expand ICBN and ICZN
What are Bulliform cells ?
Name the most abundant protein in the animal world and in the whole of the biosphere
Which hormone is known as fight or flight hormone in humans?
Name the thick band of nerve fibres which connects two cerebral hemispheres
1
1
1
1
1
6.
7.
8.
9.
10.
SECTION B
Write any two differences between recemose and cymose inflorescence
How are viroids different from viruses ?
Draw a labeled diagram of alimentary canal of cockroach
Why is respiration called amphibolic pathway ?
Write any four anatomical differences between dicot and monocot stem.
2
2
2
2
2
SECTION C
11. What is alternation of generation ? Describe how pteridophytes exhibits this phenomenon in their life
cycle ?
3
12. Name the stages of cell cycles in which one of the following events occur?
3
(1) Centromere splits and chromatids separates
(2) Chromosomes are moved to spindle equator
(3) Crossing over between homologous chromosomes takesplace
3
13. Name two cell organelles that are double membrane bound . State their functions and draw labeled
diagrams of both
3
14. Explain different classes of enzymes with examples
3
15. (a ) Name a gaseous hormone in plants
( b) Name the stress hormone in plants and why is it called so ?
3
16. Explain the cohesion-Tension transpiration pull model of transport of water in plants
3
17. Explain the mechanism of muscle contraction with the help of diagrams
3
18. Explain P EM , Its types and deficiency symptoms
3
19. What is meant by biological nitrogen fixation? Elaborate your answer with example. How does Leg
hemoglobin protects the enzyme nitrogenase ?
3
20. Explain cardiac cycle
3
SECTION –D
21. (1) What are the main steps in aerobic respiration ? Where does it takes place ?
( 2) Give the schematic representation of citric acid cycle .
OR
(1) Describe the biosynthetic phase of photosynthesis
(2) Give a comparison between C3 and C4 cycle
5
22. Explain the floral characteristics of family fabaceae with floral diagram and floral formula
And also write any two economic importance of this family .
5
OR
What is secondary growth ? Explain the secondary growth in a dicot Stem with diagrams
23. (1) Draw a labeled diagram of urinary system along with the associated Blood vessels
(2) How are lung designed in human beings to maximize the exchange of gases
5
OR
(1) What is nerve impulse? How is it transmitted across the synapse ?
(2) Draw a standard ECG and explain different segments in it
SECTION- E
OTBA
24. ‘Stress is the major cause of all diseases ‘ This is due to the change that we acquire in the life style of all
individuals .
(1) Mention the life style changes in adolescents which has created many health problems
(2) Mention the measures which can improvise the health of adolescents
4
25. ‘Smoking is injurious to health ‘ Justify the statement . Why is tobacco smoking associated with rise in
blood pressure and emphysema ( Oxygen deficiency in the body )
3
26. Why are tumour cells dangerous ? Mention any two approaches for cancer treatment
3
MARKING SCHEME
Q No
1
Value Points
ICBN-International code for BotanicaL Nomenclature
ICZN-International Code of Zoological Nomenclature
Bulliform cells- in monocot leaves , epidermal cells are modified into
large, colourless empty cells which help in rolling of leaves to minimize
the loss of water
Collagen, RuBiSCO
Adrenalin
Corpus callosum
Marks
1/2+1/2
6
Racemose –indefinite growth, acropetal succession
Cymose—definite growth, basipetal succession
1+1
7.
Viroid—smaller than virus, no protein coat , low molecular wt
Any two points
1+1
8.
Fig-7.16, page 113- NCERT text book Diagram+labeling
1+1
9
As both anabolism and catabolism takesplace
2
10
Any 4 difference
1/2x4
11
Alternation of gametophytic and sporophytic generation
Haplo-diplontic life cycle ref fig 3.7 page 42 NCERT text book
Explanation
1
1
1
12
Anaphase of mitosis/ anaphase of meiosis11
Metaphase
Pachytene of prophase of meiosis 1
1
1
1
13
Mitochondria, chloroplast or nucleus any two
Function of each
Each Diagram
½+1/2
½+1/2
½+1/2
14
Six classes of enzymes
examples
1 ½
1 1/2
2.
3
4
5
1
1/2+1/2
1
1
15
Ethylene
Abscissic acid (ABA)
Stimulates the closure of stomata and increase the tolernece of plants
to various kinds of stresses
1
½
16.
Explanation-transpiration pull , suction pressure, transport of water
3
17
Explanation .actin and myosin filament cross bridge, breaking , ATP
binding , sliding etc
Diagrams
11/2
18
PEM-protien Energy malnutrition
Kwashiorkar, Marasmus
Symptoms
1½
11/2
19.
The process of convertion of N2 in to ammonia bysome
microorganisms
Ex-rhizobium, azotobacter, cynobacteria such as anabaena, nostoc etc
Niterogenase require anerobiccondition , leghemoglobin acts as a
oxygen scavenger
1
1
1
1
1
1
Cardiac cycle -The sequential events of systole and diastole of both
atria and ventricles in the heart – explanation
20
`21
22
23
1
2
1.Conversion of pyruvic acid into Acetyl Co-A (oxidative decarboxylation
)
2. krebs cycle /TCA cycle
Mitochondria
Schematic representation page 232 NCERT text book
1
Biosynthetic phase (Calvin cycle ) page 217 NCERT text book
3
Comparison between C3 and C4 pathway ( 4 points )
2
Characteristics of fabaceae
Floral diagram
Floral formula
Economic importance
2
1
1
1
Secondary growth –definition
Explanation
Diagrams
1
2
2
Diagram-urinary system
Labeling
Lungs design –explanation
2
1
2
Nerve impulse-definition
Conduction through synapse
Standard ECG graph
Explanation PQRST
1
1
1
2
1
3
Skipping break fast and meals
Nutrient deficient fast food
Late sleep and late wake up
Lack of exercises and working habits
Alcohol, tobacco abuse
Measure to improve
Proper sleep
Regular exercises balanced and healthy food
Abstain from alcohol smoking etc
24
25.
Tobacco contains large no of chemicals including nicotine , alkaloid etc.
Nicotine stimulates adrenal gland to release adrenaline in to blood which
rise BP
Smoking increases CO cotent ibn blood and reduce the oxygen
carrying capacity of haemoglobin , This cause O2 deficiency in blood
resulting in emphysema
27.
Cancerous cells continue to divide giving rise to masses of cells called
tumour . These cells grow rapidly invading and damaging surrounding
normal cells
Chemotherapy
Immunotherapy
Radiotherapy etc
2+2=4
1
1
1
1
1
1
UNIT No.
I
Diversity in the living world
II
Structural Organization in
plants and animals
III
Cell structure and function
IV
Plant physiology
V
Human physiology
VBQ
OTBA
Total
BIOLOGY – SAMPLE PAPER 4
Class -XI (2013-14)
BLUE PRINT
Weightage
VSA
SA I
(no. of
(no. of
questions)
questions)
SA II
(no. of
questions)
VBQ
06
1(1)
2(1)
3(1)
LA
(no. of
questio
ns)
-
Total
10
2(2)
2(1)
6(2)
-
10
12
1(1)
2(1)
9(3)
-
12
16
-
2(1)
9(3)
5(1)
16
16
1(1)
-
6(2)
5(1)
16
5(5)
2(1)
10(5)
3(1)
36(12)
5(1)
15(3)
10
70(26)
06-
4(1)
10
70
4(1)
SAMPLE PAPER
BIOLOGY-XI
Time allotted: 3.30 hrs
Max Marks: 70
General Instructions:
i.
All questions are compulsory.
ii.
The question paper consists of four sections A,B,C & D. Section –A contains 5 questions of I mark each,
Section-B contains 5 questions of 2 marks of each, Section-C contains 12 questions of 3 marks each,
Section –D contains 1 value based question of 4 marks and Section-D contains 2 questions of 5 marks
each. A separate section of OTBA is also included of 10 marks (1 question of 2 marks,1 question of 3
marks and 1 question of 5 marks).
iii.
There is no overall choice.However,an internal choice has been provided in one question of 2 marks, in
one question of 3 marks and all the questions of 5 marks. A student has to attempt any one of the
alternatives in such questions.
iv.
Wherever necessary, the diagrams drawn should be neat and properly labelled.
SECTION A
1. What technical term is given to the symbiotic association of fungi with (a) algae (b) roots of higher plants,
respectively?
2. Name the type of roots which perform the function of respiration in Rhizophora.
3. What technical term is given to bone cell?
4. Proteins are polymers of amino acids. Name the bond that links the two amino acids.
5. Name the double walled sac that covers the lungs in mammals.
SECTION B
6. Where is cytochrome-c located? What is its function?
7. Amino acids are substituted methane. Justify why they are called α- amino acid.
OR
Write the structural formula of (a) Glucose (b) Ribose.
8. How are exarch and endarch conditions different anatomically?
9. Write the scientific name of (a) flightless bird (b) an oviparous animal.
SECTION C
10. What are the criteria for the five kingdom classification proposed by R.H.Whittaker?
11. Draw a labeled diagram to show the different regions of a root.
12. Write the appropriate type of tissues in Column B according to the functions mentioned in Column A
A
B
S.No
1
Secretion & absorption
-
2
Protective covering
-
3
Linking and supporting framework
-
13. What is a mesosome in a prokaryotic cell? Mention the functions it performs.
14. Distinguish Anaphase of mitosis from Anaphase I of Meiotic division I.
OR
In which phase of meiosis are the following formed, choose the answer from the hint given below:
a) Synaptonemal complex
b) Recombination nodules
c) Appearance / activation of enzyme recombinase
d) Terminalisation of chiasmata
e) Interkinesis
f) Formation of dyad cell.
15. Read the given graphical representation properly and answer the questions to follow:
a) What do A,B,C&D represent in the graph given?
b) What is active site in an enzyme?
16. Study the figure given below in which the two chambers A and B containing solutions are separated by a
semipermeable membrane.
a)
b)
c)
d)
e)
f)
Solution of which chamber has a lower water potential?
Solution of which chamber has a lower solute potential?
In which direction will osmosis occur?
Which soln has higher solute potential?
At equilibrium which chamber will have lower potential?
If one chamber has a water potential of -2000KPa and the other has 1000KPa, which chamber has
the higher water potential?
17. RuBisCo is an enzyme that acts both as carboxylase and oxygenase. Why do you think RuBisCo carries
out more carboxylation in C4 plants?
18. Write the steps involved in root nodule formation in legumes. Draw the diagram of the same also.
19. Fill in at A, B, C, D, E & F and complete the flow chart.
JG cells release (A), when there is fall in (B), or low availability of water in the body
The released chemical converts (C) in the blood to Angiotensin I and then to Angiotensin II
Angiotensin II increses the blood pressure by of (D)
Angiotensin II also activates adrenal cortex to release (E)
It causes reabsorption of Na+ and H2O causing rise in (F)
20. Name the three enzymes secreted by pancreas and also name the end products of their action on protein,
fats and starch respectively.
VBQ (VALUE BASED QUESTION) SECTION D
21. Shruthi’s grandfather has to undergo a bypass surgery for coronary artery disease. Shruti explains to her
mother and other members of her family all about coronary artery disease and also tells in general how it can
be prevented.
a) What is coronary artery disease commonly called?
b) What happens in this disease?
c) How can it be avoided by proper life style?
d) What values did Shruthi show when she explained about the disease?
SECTION E
22. What is synapse? Explain with the help of a diagram how the impulse is transmitted across the synapse?
Write one point of difference between electrical synapse and chemical synapse.
OR
Name the hormone that regulates each of the following and mention the source of it:
a) Heart beat and blood pressure
b) Secretion a of growth hormone
c) Maturation of Graffian follicle
+2
d) Rise in Ca level in blood
e) Milk secretion
23. What is glycolysis? Why is it called EMP pathway? Give the schematic representation of glycolysis.
OR
Where does Non cyclic photophosphorylation take place? Describe the process. Why the process is
called so?
OTBA SECTION-10 MARKS
24. Read the text given properly and answer the following:
a) Write your opinion in favour or against on Mass tourism in biodiversity ‘hotspots’ (2).
b) Describe how human beings are responsible for biodiversity loss.(Three points) (3)
c) Look at the Fig-6 and answer the questions that follow:
i.
Which phylum animals are abundant in Western Ghats?
ii.
Name an animal that belongs to this phylum.
iii.
Write two examples of endemic mammal and bird.
iv.
Which taxonomical aid will help you in study endemic mammals? (1+1+2+1=5)
MARKING SCHEME
1. (a)- Lichen ½ (b) Mycorrhiza ½ .
2. Pneumatophore-1.
3. Osteocytes – 1.
4. Peptide bond – 1.
5. Pleura – 1.
6. Attached to the outer surface of the inner membrane of mitochondria – 1.
Acts as a mobile carrier for transfer of electrons between complex III & complex IV – 1.
7. Substitued methane with four substituent groups,hydrogen,carboxyl group,amiono group and a variable
group(R).-1.
They are substituents on the α – carbon and hence are called α – amino acids.-1
OR
Fig of each.(1+1) ( Refer to the NCERT Text)
8. Protoxylem towards the periphery and metaxylem towards the pith/centre.e.g.xylem of roots – 1.
Protoxylem towards the centre/pith and metaxylem towards the periphery,e.g.xylem of stem – 1.
9. (a) Struthio-1 (b) Ornithorynchus – 1
10. Mode of nutrition/Body organization/Complexity of cell structure/Nature of cell wall/Phylogenetic
relation.
(any three). 1X 3 =3.
11. Fig drawing -1 and labeling (4) – ½ x4.
12. i) Simple cuboidal/simple columnar epitlelium – 1
ii) Compound epithelium – 1
iii) Connective tissue – 1
13. Proper definition – 1.
Increasing surface area of plasma membrane and enzymatic content/ respiration / secretion/cell wall
formation/DNA replication (any two) – 2.
14. Anaphase- The centromere of every chromatids divides. Only one chromatid moves to the poles. The
chromatids moving to one pole are genetically similar to other one moving to the opposite pole.
Anaphase I- The centromere does not divide. Both the chromatids of one member of each homologous
chromosomes move to the poles. Not genetically similar. 1x 3= 3
OR
a) Zygotene of prophase I, b) pachytene pf Prophase I,c) pachytene pf Prophase I, d) Diakinesis,
e) after telophase I but before meiosis II, f) After meiosis I – ½ X 6 = 3.
15. activation energy with enzyme. b) activation energy without enzyme. c) products d) transtition state.
½ X4=2
The place on the enzyme where the substrate binds for activity is called active site.1
16. a) Chamber B, b) Chamber B, c) A to B, d) Chamber A, e) No chamber as both will be equal,
f) Chamber with – 1000kPa.
½X6=3
17. RuBisCo present in bundle sheath cells of C4 plants. The mesophyll cells of C4 plants have a
mechanism to concentrate CO2 in bundle sheath cells. So, the Conc. Of CO2 is higher. RuBisCo
function as carboxylase
(Proper explanation – 3.
18. Each step ½ X 4 =2 + Fig – 1
19. A – Renin, B – GFR, C – Angiotensinogen, D- Glomerular Blood pressure, E – Aldosterone, F – Blood
Pressure & GFR. ½ X 6=3
20. Trypsin + protein/proteose/peptone = smaller peptides. ( ½ + ½ )
Lipase + triglycerides = diglyceride+ nmonoglyceride + fatty acid. (½ + ½)
Amylase + starch + Maltose. (½ + ½)
21. VBQ
a) Artherosclerosis. 1
b) Deposition of cholesterol on innerwalls of the blood vessels resulting into narrowing of the
lumen of artery. It often becomes solidified with calcium.1
c) Reducing intake of saturated fats/regular exercise/avoid over eating. 1
22. Defination – 1, Fig – 1 ½ + Explanation – 1 ½ , No synaptic cleft in electrical synapse but fluid filled
synaptic cleft in case of chemical synapse-- - 1.
OR
a) Adrenaline / noradrenaline – adrenal medulla ( ½ + ½ )
b) GHRH – Hypothalamus ( ½ + ½ )
c) FSH – Anterior Pituitary ( ½ + ½ )
d) Thyrocalcitonin – Thyroid gland ( ½ + ½ )
e) Prolactin & Proghesterone – Anterior Pituitary & Corpus luteum ( ½ + ½ )
23. Defination -1, Name of the scientists – 1, Schematic diagram – 3
OR
a) Lamella of grana – 1
b) Process – 3 ( Refer to NCERT Text)
c) Since, electrons lost from PS II do not return to PS II but are replaced by those from
water-1.
OTBA SECTION (10)
A. Opinion for / against – 2
B. Any three reasons - 3
C. Arthropoda – 1
D. Butterfly ( any insect) – 1
E. Lion tailed Macaquo & large spotted Civet – 1
Nilgiri Wood Pigeon & Malabar Grey Hornbill – 1
F. Visit to the area and asking the local people living in that area ( Key) - 1
BIOLOGY – SAMPLE PAPER 5
Class -XI (2013-14)
BLUE PRINT
Unit
Weightage
VSA
SA I
Diversity in the living world
6
1(1)
2(1)
Structural organisation in plants and animals
10
1(2)
2(1)
Cell- Structure and Function
12
1(1)
Plant Physiology
16
2(1)
Human Physiology
16
1(1)
2(2)
OTBA
10
SA II
3(1)
3(2)
3(2)
3(3)
3(2)
3(2)
VBQ
LA
5(1)
5(1)
5(1)
4(1)
SAMPLE QUESTION- 2013-14
BIOLOGY (Class XI)
Time:3 hrs
Max marks: 70
General Instructions:
i. All questions are compulsory.
ii. This question paper consists of four Sections A, B, C and D. Section A contains 5 questions of one mark each,
Section B is of 5 questions of two marks each, Section C is of 12 questions of three marks each and Section D is
of 3 questions of five marks each.
iii. There is no overall choice. However, an internal choice has been provided in one question of 2 marks, one
question of 3 marks and two questions of 5 marks weightage. A student has to attempt only one of the
alternatives in such questions.
iv. Wherever necessary, the diagrams drawn should be neat and properly labelled.
Section A (1 Marks)
1. Name two accessory digestive organs in humans.
2. At what stages of the cell cycle the following parameters change: a) No. of chromosomes per cell b) Amount of
DNA content per cell.
3. What are taxonomical keys?
4. Define the term achlamydeous and dichlamydeous.
5. Look at the figure below and label – i) The part that separates the embryo from the
endosperm, ii) The shield shaped cotyledon.
Section B (2 marks)
6. Mention the two factors on which imbibition depend.
7. Explain haplontic and diplontic life cycles by giving examples.
8. Differentiate between tidal volume and residual volume.
9. How will you identify the slides showing T.S. of dicot Stem and T.S. of
monocot stem? In support of your answer give low power microscopic diagram
also.
10. What is the role of HCl in protein digestion?
Section C(3 Marks)
11. Give the structural formula of a) Glycine, b) Alanine and c) Serine.
12. Name and explain the regions of growth of roots in plants.
13. What is the role of calcium ions, troponin and F-actin during contraction in
striated muscles of humans?
14. Why is Respiratory quotient (RQ) less than one when fats are used in respiration
and infinite in case of anaerobic respiration?
15. Where is the gizzard located in Cockroach? Explain its muscular arrangement and give its function.
16. Explain the different categories of animals based on the presence or absence of
coelom.
OR
Enumerate the important universal rules of nomenclature.
17. What do you understand by the term plasticity? Describe a phenomenon showing plasticity with examples.
18. Describe the process of crossing over. What is its significance?
19. Name this graphic display of a normal person. What do these P wave, QRS
complex and T wave represent?
20. Give information about the following mineral nutrients in plants as asked
against each:
(i) Nitrogen: The form in which it is absorbed from the soil
(ii) Zinc: Its two deficiency symptoms in plants.
Section D(5 Mark)
21. Describe briefly the chemical steps in Calvin cycle.
OR
Explain the role of oxygen, F0 – F1 particles and NADH2 in oxidative
phosphyorylation.
22. Name the hormone that controls the permeability of water of the distal tubule
and collecting tubule of the nephron. Name its source. How does this hormone
control the water content of human body?
OR
How many vertebrae in all, do we have? Categorize them on the basis of their
location giving the specific number in each category? [5]
23. Enumerate the similarities shared between mitochondria and chloroplasts.
OR
Describe the fluid mosaic model of cell membrane.
Section E-OTBA SECTION (10 Marks)
Read the passage given below and answer the question that follow:
RJ, 33 years old, was highly dedicated to his job and lived a very hectic lifestyle. He was consideredas the
hardest working employee in his organisation. He never liked to waste time during lunchhours and worked
continuously during office time. He either frequently ate from outside, grabbingquick meals from hawkers or stalls,
cafes and fast food restaurants, or he just skipped food. Henever had time for exercise and was very overweight.
He was also a heavy smoker, and frequentlyused the excuse that cigarettes helped him deal with stress.
Research on the most fascinating components of so called harmful substances uncovers thecomponents, intake
of which is being enjoyed by smokers:
Picture–3
One day, he suffered with severe chest pain and collapsed because of that. His colleagues rushedhim to the
hospital. Upon investigations, the doctor revealed that he had partial blockage of hisblood vessels and had
suffered a heart attack during the meeting.RJ’s lifestyle is characteristic of many working people who tend to
focus more on their careers thantheir health. This kind of lack of concern for their health is extremely disturbing
and alarming. It isbecause of this that incidences of non-communicable diseases (NCDs) such as heart diseases
havebeen on the rise.
Non-communicable diseases (NCDs) are diet-related chronic diseases and the main ones includeheart diseases,
obesity, diabetes, hypertension and different cancers. According to the World HealthOrganisation (WHO), more
than nine million deaths worldwide, attributed to Non CommunicableDiseases, occur before the age of 60.
Statistics–2: [Source: WHR, 2002]
The pie chart above reveals that the larger number of deaths is contributed by non – communicablediseases,
which includes life style related diseases too.The report of the year 2011 of National Health and Morbidity Survey
(NHMS) gives clearindications of the rise in NCDs and its risk factors.According to the survey, the prevalence for
the following has increased compared to previousyears:
 Dia be te s – increased from 11.6% (2006) to 15.2%.
 Hype rte ns ion in a dults a bove 30 ye a rs old – increased from 32.2% (2006) to 32.7%.

O be s ity
–
increased
more
than
three-folds
from
4.4%
(1996)
to
15.1%.
Statistics–3 [Source: Survey conducted by NGO]
Statistics–4
Statistics–5 [Source: Data by NIH]
QUESTIONS :
24.Observe the graph(statistics 4) and answer the following(3)
Increase in obesity is more in the age group 12-17 compared to 2-5 age groups.What could be the probable
causes?Give any three reasons.
25.Teenagers especially girls are very conscious to have ‘zero-figures’ lately.Is this a psychological
condition?Discuss any two harmful effects of this later in life.(3)
26.RJ, a 33 year old employee is mentioned as a hard woking person who ends up with a heart attack.
i)What can you infer from this case?
ii)What values do you see in this employee?
iii)Do you agree with him’cigarettes reduce stress’.Mention 2 diseases caused by cigarette smoking.
Answer Scheme
Section A (1 Marks)
1. Salivary glands, liver and gall bladder. (Any two). (1)
2. a) No. of chromosomes does not change in any stage of cell cycle during mitosis and in meiosis, it changes to
half in anaphase I.
b) S-phase of interphase – The DNA content doubles after DNA replication.
3. taxonomical aid used for identification of plants and animals based on similarities and dissimilarities.
4. A flower lacking both calyx and corolla or perianth is called achlamydeous.
A flower having both calyx and corolla is called dichlamydeous.
5. (i) Aleurone layer and (ii) Scutellum
Section B
6. Amount of imbibition depends upon:…1x2
(i) Water potential gradient between adsorbent and the liquid/water imbibed.
(ii) Affinity between the absorbent and the imbibed liquid.
7. Haplontic life cycle -The haploid phase is dominant and the diploid phase is represented only by the zygote
which
undergoes meiosis.
- Embryo and sporophyte are absent.
- Example – algae (spirogyra)….1x2=2
Diplontic life cycle
- The diploid phase is dominant and few celled gametophytes are the only haploid phase in the
life cycle.
- Zygote develops into an embryo and then into a sporophyte.
- Examples – angiosperms and gymnosperms….1.
8.Any two…1x4=2
Tidal volume
Residual volume
1. It is the volume of air inspired or
1. It is the volume of air which remains
expired with each normal breath.
still in the lungs after the most forceful
2. This is about 500 ml in an adult
expiration.
person.
2. It is about 100 ml to 1200 ml of air.
9. Any four…1/2 x 4
T.S. of dicot stem
T.S. of monocot stem
- Vascular bundles are open, i.e.,
Vascular bundles are closed, i.e.,
they have cambium.
they have no cambium.
- There is no protoxylem lacuna.
- Protoxylem lacuna is present.
- No sclerenchymatous sheath is
- Each vascular bundle is
seen around the vascular bundles.
surrounded by sclerenchymatous
- Phloem parenchyma is present.
sheath.
- Vascular bundles are few and are
- Phloem parenchyma is absent.
arranged in a ring.
- Vascular bundles are many and
are scattered in the ground tissue
10. i. It maintains a strongly acidic pH of about 1 – 2 in the stomach….1/2 x 4
ii. It converts inactive pepsinogen to pepsin.
iii. It denatures many food proteins. This helps in pepsin action.
iv. It kills bacteria.
Section C
11.
1x3
12. The period of plant root growth is divided into three phases namely:
a. Meristematic (cell division)
b. Elongation (cell enlargement)
c. Maturation (cell differentiation…1x3
13. The role of calcium ions, troponin and F-actin during contraction in striated
muscles of humans are :… 1x3 =3
(i) Calcium ions : The ca++ ions bind to troponin causing a change in its shape
and position and thereby remove the masking of active sites for myosin.
(ii) Troponin : It masks the active binding sites for myosin on the actin filaments.
(iii) F-Actin : The actin sites on the F-actin are specific to the myosin head for
cross bridge formation.
14. (i) Respiratory quotient (RQ) is the ratio of the volume of carbon dioxide
produced to the volume of oxygen consumed in respiration over a period of
time.
As fats contain less number of oxygen atoms it requires more amount of oxygen
for oxidation. Since the volume of oxygen required is high, the RQ is less than 1.
(ii) In anaerobic respiration there is no consumption of oxygen. Carbon dioxide is
produced in most of the cases. Therefore, RQ is infinity.
15. The gizzard follows the crop of the alimentary canal.
It has an outer layer of thick circular muscles and thick inner cuticle forming six
highly chitinous plate called teeth.
2+1=3
Gizzard helps in grinding the food particles.
16. Presence or absence of a cavity between the body wall and the gut wall is very
important in classification. The body cavity, which is lined by mesoderm, iscalled coelom. Animals possessing
coelom are called coelomates, e.g.,annelids, molluscs, arthropods, echinoderms,hemichordatesand chordates.In
someanimals, thebody cavity isnot lined by mesoderm; instead, the mesoderm is present as scattered pouches in
between the ectoderm and endoderm. Such a body cavity is called pseudocoelom and the animals possessing
them are called pseudocoelomates, e.g., aschelminthes. The animals in which the body cavity is absent are
called acoelomates, e.g., platyhelminthes. 1 ½ +1 ½ = 3
OR
The universal rules of nomenclature are:
a. Biological names are normally in Latin and written in Italics. They are latinised or
derived from Latin irrespective of their origin.
b. First word in a biological name represents genus while the second name denotes
species.
c. Both the words when written in hands are separately underlined or printed in
Italics to indicate their Latin origin.
d. First word starts with capital letter while the second word starts with small letter.
Eg – Tamarindus indica.
e. Name of the author is written in abbreviation after species name in Roman. Eg –
Homo sapiens (Linn). 1x3=3
17. Plant follow different pathways in response to environment or phase of life to
form different kinds of structures, this ability is called plasticity.
The leaves of the juvenile plant in cotton, coriander and larkspur are different
in shape form those in mature plant, this represent the heterophyllous
development.The difference in shapes of leaves produced in air and those produced in water in buttercup
represent the heterophyllous development due to
environment. This phenomenon of heterophylly is an example of plasticity.1 x3= 3
18. In pachytene stage of prophase I in Meiosis I, the bivalent chromosomes clearly appear as tetrads. This stage
is characterized by the appearance of recombination nodules, the sites at which crossing over occurs between
non-sister chromatids of the homologous chromosomes. Crossing over is the exchange of genetic material
between two homologous chromosomes. Crossing over is also an enzyme-mediated process and the enzyme
involved is called recombinase. Crossing over leads to recombination of genetic material on the two
chromosomes. Recombination between homologous chromosomes is completed by the end of pachytene,
leaving the chromosomes linked at the sites of crossing over. 1 ½ x 6 = 3
19. Electrocardiogram.
P-wave indicates the electrical or depolarisation of the atria (atrial contraction).
QRS complex represents the depolarisation of the ventricles (ventricular
contraction). T-wave indicates ventricular repolarisation (ventricular relaxation).1x3=3
20. (i) Nitrogen cycle is regular circulation of nitrogen amongst living organisms,
reservoir pool in the atmosphere and cycling pool in the lithosphere.
(ii) (a) Leaf malformations, leaf rosetters.
(b) Interveinal chlorosis and several types of leaf distortions.(1x3 = 3)
Section D(5 Mark)
21. 1. Carboxylation – Carboxylation is the fixation of CO2 into a stable organic
intermediate. Carboxylation is the most crucial step of the Calvin cycle where CO2 is
utilised for the carboxylation of RuBP. This reaction is catalysed by the enzyme RuBP carboxylase which results
in the formation of two molecules of 3-PGA. Since this enzyme also has an oxygenation activity it would be more
correct to call it RuBP
carboxylase-oxygenase or RuBisCO.
2. Reduction – These are a series of reactions that lead to the formation of glucose. The steps involve utilisation
of 2 molecules of ATP for phosphorylation and two of NADPH for reduction per CO2 molecule fixed. The fixation
of six molecules of CO2 and 6 turns of the cycle are required for the removal of one molecule of glucose from the
pathway.
3. Regeneration – Regeneration of the CO2 acceptor molecule RuBP is crucial if the
cycle is to continue uninterrupted. The regeneration steps require one ATP for
phosphorylation to form RuBP. Hence for every CO2 molecule entering the Calvin cycle, 3 molecules of ATP and
2 of NADPH are required. It is probably to meet this difference in number of ATP and NADPH used inthe dark
reaction that the cyclic phosphorylation takes place.
1/2 x 10= 5
OR
Role of oxygen
a) Oxygen drives the whole process by removing the hydrogen from the system.
b) It acts as the final acceptor of hydrogen.
Role of F0 – F1 particles
a) The F1 headpiece is a peripheral membrane protein complex and contains the site
for synthesis of ATP from ADP and inorganic phosphate.
b) F0 is an integral membrane protein complex that forms the channel through which
protons cross the inner membrane.
c) The passage of protons through the channel is coupled to the catalytic site of the
F1 component.
Role of NADH
a) When NADH is oxidized to NAD in the electron transport system the energy
released by the proton is used to phosphorylate ADP into ATP. 1x 5=5
22. Vasopressin or antidiuretic hormone controls the permeability of water of the
distal tubule and collecting tubule of the nephron.
-It is secreted by the hypothalamus and released by the posterior pituitary.
-It renders the distal convoluted tubule and collecting duct of water and increases
the reabsorption of water.
-As a result, the reabsorption of water from the glomerular filtrate is increased and
the urine becomes hypertonic.
-Thus, loss of water is reduced and water is conserved. 1x5=5
OR
There are 26 vertebrae in our body.
1+4 = 5
The vertebrae are grouped into five groups:
(i) Cervical Vertebrae – 7 in number, present in the neck, first cervical vertebra
is called atlas, and it articulates with the optical condyles of the skull.
(ii) Thoracic Vertebrae- 12 in number, present in the chest.
They are larger, stronger than cervical vertebrate, and articulate with ribs.
(iii) Lumbar Vertebrae – 5 in number, present in the abdomen.
(iv) Sacrum – The five sacral vertebrae are fused in the adult, forming one
structure called the sacrum.
(v) Coccyx – The four coccygeal vertebrate are fused to form a curved triangular
bone, called the coccyx.
23. (i) Presence of double membrane envelope.
(ii) Formation of involutions from the inner membrane.
(iii)The organelles possess their own DNA, RNA and 70S ribosomes to have
sufficient functional independence from the cellular machinery.
(iv) DNA is naked in both.
(v) They are formed by the division of pre-existing organelles.
(vi)They take part in energy transduction.
(vii) Both occur in eukaryotes and are absent in prokaryotes 2 ½ + 2 ½ = 5
OR
According to this model, the membrane does not have a uniform disposition of
lipids and proteins but is instead a mosaic of the two. Further, the membrane is
not solid but is quasifluid.
- It is the most recent model of a bio-membrane proposed by singer and Nicolson in
1972.
-The lipids are arranged within the membrane with the polar head towards the outer
sides and the hydrophobic tails towards the inner part; this ensures that the nonpolar
tail of saturated hydrocarbons is protected from the aqueous environment.
-Peripheral proteins (extrinsic proteins) lie on the surface of membrane while the
integral proteins (intrinsic proteins) are partially or totally buried in the
membrane.
-Some of the integral proteins run throughout the lipid bilayer, they are called
transmembrane proteins; the transmembrane proteins form channels for the
passage of water and water soluble substance.
-Some lipids and extrinsic proteins possess small carbohydrate molecules to form
glycolipids and glycoproteins.
-Conjugated oligosaccharides function as recognition centres, sites of attachment,
etc.
-Certain other proteins function as receptors for hormones, recognition centres and
antigens.
-The quasi-fluid nature of lipid enables lateral movement of proteins within the
overall bilayer. ½ x 10 = 5
Section E-OTBA (10 Marks)
24. Any three reasons…1x3
i)lack of physical exercise/outdoor activities
ii)nutritionally low calorie rich junk food/soft drinks
iii)glued to TV/Computer screens
25.Yes especially when they resort to crash dieting..1
Any two effects…1 x2
i)decrease in bone density due to less calcium intake leads to early osteoporosis
ii)Anaemic condition due to less intake of Iron.
26. i)Work-life balance is important or success should not be at the cost of health…1
ii)Hard work,determination,ambitious,sincerity,values time..any two…1
iii)No,its only temporary feeling…1
lung cancer,strokes,emphysaema…any two…1
SAMPLE PAPER 6
BLUE PRINT
BIOLOGY THEORY
CLASS- XI
S. No
Type of
questions/units
Diversity in
living world
Structural
organization in
animals and
plants
Cell-structure
and function
Plant
physiology
Animal
physiology
OTBA
Total
1
2
3
4
5
VSA (1
mks)
1-1
SA I(2
mks)
2-1
SAII (3
mks)
3-1
LA
(4mks)
-
LA (5
mks)
-
Weighatage
1-1
-
-
4-1
5-1
10-3
1-1
2-1
9-3
-
2-1
9-3
5-1
16-5
2-2
-
9-3
5-1
16-6
5-5
4-2
10-5
6-2
36-12
15-3
10-4
70-26
6-3
12-5
4-1
SAMPLE PAPER 8
044-BIOLOGY (THEORY) SET –I
CLASS XI
DESIGN OF THE QUESTION PAPER
Hrs: 3 Hrs. & 15 Min.
Max. Marks: 70
I Weigthtage to content/subject units
Unit
I
II
III
IV
V
Content
Diversity in the Living World
Chapters)
Structural Organization in Plants & Animals
Cell: Structure and Functions
Chapters)
Plant Physiology
(5Chapters)
Animal Physiology
Chapters)
OTBA
Themes)
Total
Marks
06
(4
(3 Chapters)
(3
10
12
16
(7
16
(02
10
70
II Weightage to different form of questions:
S.No
1
2
3
4
5
Form Of Question
Very Short Answer(VSA)
Short Answer(VSA)
Short Answer(VSA)
Long Answer (LA)
OTBA
Marks for each que.
01
02
03
05
3+4
No. Of Que.
5
5
10
3
2(3) +1(4)
Total Marks
5
10
30
15
10
Total
70
III. Weightage to difficulty level of questions.
S.No.
1.
2.
3.
Estimated difficulty level
Easy
Average
Difficult
Percentage
15
70
15
About 20% weightage has been assigned to questions testing higher order thinking
skills of learners.
BLUE PRINT
CLASS XI / Model Question Paper (ISC for PGT (Bio) 2013-2014 / BIOLOGY (Theory)
U.
No
I
II
III
IV
V
VI
Units
Type of
Ques.→
↓
Diversity in the Living World
Structural Organization in Plants
& Animals
Cell: Structure and Functions
Plant Physiology
Animal Physiology
Total (theory)
OTBA
Overall Total
VSA
(1 mark)
SA I
(2 marks)
SA II
(3marks)
LA
(5marks)
VBQ
Total
1(1)
--
1(2)
2(2)
1(3)
2(3)
-1(5)
---
06
10
1(1)
1(1)
1(1)
5(5)
-5(5)
-2(2)
-5(10)
-5(10)
2(3
2(3
3(3)
10(3)
2(3)
12(3)
-1(5)
1(5)
3(15)
-3(15)
----
12
16
16
23 (60)
(3)10
26 (70)
1(4)
1(4)
MODEL QUESTION PAPER 8
044-BIOLOGY (THEORY) Set - I
CLASS XI/ Prepared by Group – II
Duration: 03:00Hrs.
M. Marks: 70
______________________________________________________________________________
Instructions:
(i) All Questions are compulsory.
(ii) This question paper consists of Four Sections A, B, C, D& E Section-A consists 5
questions of one mark each. Section-B is of 5 questions of two marks each.
Section-C is of 12 questions of three marks each, Section-D is of 3 questions of
five marks each &Section E is of OTBA
(iii) There is no overall choice. However an internal choice has been provided in one
question of 2 marks. One question of 3 marks and two questions of 5 marks
weightage. A student has to attempt only one of the alternatives in such questions.
(iv) Wherever necessary diagram drawn should be neat and properly labeled.
______________________________________________________________________________
Section – A
(5x1=5)
1. Museum and Herbaria belong to Set- I and Zoo parks and Botanical gardens belong to
the Set-II. Both the sets are taxonomical aids which help in identification,
naming and classification of organisms. Yet they differ each other.
Cite the main difference between them.
2. How do chemosynthetic autotrophic bacteria produce their ATP?
3. What is quiescent stage in cell cycle?
4. Name the muscle proteins which form the thin filament of muscle fibre.
5. How much amount of urea is excreted out per day by a healthy person?
Section – B (5x2=10)
6. Name the alga whose products
(i)used to grow microbes and in preparations of jellies.
(1)
(1)
(1)
(1)
(1)
(2)
(ii) used as food supplement by space travellers.
7. What is venation? What types of venation found in the leaves of
(a) Banyan tree (b) Bamboo tree
8. What is stomatal apparatus? Name the
(a) structure of guard cell that help in opening and closing of stomata
(b) ions that help in opening and closing of stomata
9. Identify the process occurring in I and II in the given diagram.
(2)
(2)
(2)
10. Write any two criteria for essentiality of an element in mineral nutrition of plants.
Section – C (10 + 2 OTBA ques.)=12x 3 = 36
(2)
11. What are glycosidic, peptide and Ester bonds?
12. What is Cytokinesis? How is it accomplished in plant cell and animal cell?
Explain with example.
13. Compare Chondrichthyes and Oestichthyes with reference to the given feature.
(3)
S.No
1
2
3
4
5
6
Feature
Type of the Skeleton
Location of mouth
Gills & Operculum
Air bladder
Types of Scales
Habitat
Chondrichthyes
Oestichthyes
14. Name the three basic tissue systems of flowering plants. Give the tissue name under
each system.
15. Read the following characters of a flower. Write the floral formula and
draw the floral structure.
Floral characters are:
“Bisexual, Zygomorphic, five united sepals with imbricate aestivation, petal
are polypetalous five ij numbers with papillionaceous, Stamens are 10 in numbers with
diadelphous condition that 9 are united and one is free. Gynoecium is unilocular,
monocarpellary and the ovary is superior”
16. Two chambers A and B containing solutions are separated by a semi permeable membrane.
Chamber A has water potential (Ψw) of – 1400 kPa and chamber B has water potential
(Ψw) of – 800 kPa.
a) In which direction osmosis will occur?
b) Which solution has a higher solute potential?
c) To conduct reverse osmosis (RO) which chamber has to receive external pressure?
17. Differentiate between cyclic and non-cyclic photo phosphorylation.
18. a) Draw a neat labeled diagram of transverse section of gut.
b) What are villi?
19. Observe the following diagram and the questions.
a) What does the P-wave represent?
b) What does QRS- complex indicate?
c) What does the T- wave represent?
(3)
(3)
(3)
(3)
(3)
(3)
(3)
(3)
20. Name the two heart sounds and mention when they are respectively
Produced in the cardiac cycle.
(3)
Section – D
(3x5=15)
21. Briefly explain the events in Prophase I of Meiosis cell division with necessary diagram
OR
Describe the structure of mitochondrion along with labeled diagram.
(5)
22. What is EMP pathway? Give the schematic representation of the pathway.
OR
What is biosynthetic phase in photosynthesis? Describe in details of the steps involved
in Calvin cycle.
(5)
23. Write the source gland, target organs and deficiency diseases of the following:
a) Growth Hormone
b) Vasopressin
c) Insulin
d) Thyroxine
e) Parathyroid hormone
OR
How do the following pulmonary capacities are derived?
a) IC b) EC c) FRC d) VC e) TC
(5)
SECTION: E (OTBA) – 10 Marks
Binge eating is not triggered by extremely intense hunger. It is a response to depression, tension, stress or other
feelings related to body weight, shape or feeding habits. Dr. Ashraf says, “There is a rapid increase in mental
illness”, by adding that the mental illness has become common here. For him, conflicts and increase in
competition level are some of its contributing factors. Various life style diseases including diabetes, drug abuse,
depression, obesity, cardio- vascular diseases and various forms of cancer are taking a heavy toll on the health of
people. This was stated by the Dept. of community medicine, Sher-e-kashmir Institute of medical
Sciences(SKIMS). Kulsoom Bhat, SKIM’s Public Relations Officer (PRO), while quoting various health experts in
aseminar on ‘life style diseases and the role of community medicine’, organized by the hospital in January, says,
over use of internet causes internet addiction disorder, which is seen as the most modern life style disease. She
adds, the speakers viewed physical inactivity, improper diet, tobacco, alcohol and stress as the main contributing
factors that cause increased risk to human health, taking the form of very specific life style diseases. Referring to
a study conducted by hospital’s Deptt. of General Surgery, Clinical Biochemistry and Endocrinology, Bhat says,
obesity has been found to be an important factor associated with the riskof having gall bladder stone diseases
followed by raised cholesterol. She, while quoting experts ,says, metabolic syndrome is a growing health problem
and is closely associated with cardiovascular diseases and non-alcoholic fatty liver diseases.
Based on the information given in the said paragraph, answer the questions mentioned below.
24. “Smoking is injurious to health”. Justify the statement. Why is tobacco smoking associated
with rise in blood pressure and emphysema (oxygen deficiency in the blood)?
(4)
25. Give any six examples for life style diseases.
(3)
26. In a survey a question was asked, “How long do you want to live?” It was answered ‘at least
for 70 years’ by 58.5% people, and ‘110 years’ by 28.5% people. Do you think the present generation
especially the youngsters with many lifestyle-disorders can lead such a long life? Justify.
(3)
MARKING SCHEME
Q.No
1
2
3
Gist of the Answer
SECTION-A
Set I has preserved specimens of animals and dried
plants whereas Set –II have the live specimens of
animals and plants
They oxidize nitrates, nitrites and ammonia and use
the released energy for their ATP production
Quiescent stage or G0 stage is the inactive stage
shown by the cells which do not divide further.
Value Points
Total Marks
½+½
1
1
1
1
1
4
5
6
7
8
9
10
11
12
13
14
15
16
Globular actins, tropomyosin, troponin
25-30 gm
SECTION-B
a)Gelidium & Gracilaria
(b) Spirullina
Venation is the arrangement of veins and vein lets/
(a) Bamboo tree- parallel venation
(b) Banyan tree – Reticulate venation
The stomatal aperture, guard cells and the subsidiary
cells together form stomatal apparatus/
(a) Orientation of microfibrils
(b) Pottasium ions(K+)
I - Antiport , II - symport
Absolutely necessary for normal growth and
reproduction
Requirement is specific and can’t be replaced by other
elements
Directly involved in metabolism ( any two)
1. Glycosidic bond is formed between the
aldehyde or ketone group of one
monosaccharide and the alcohol group of
another;
2. Peptide bond is formed between carboxyl
(COOH) group of one amino acid and
amino group of another;
3. Ester bond is formed between the
Phosphate group and hydroxyl (OH) group
of sugar.
1. Cytokinesis in plant cell - by constriction
and furrow formation;
2.
in animal cell - by
Formation of precursor cell called cell
plate with necessary diagrams.
3. Cytokinesis is the division of cytoplasm.
Feature
Chondrichthyes Oestichthyes
Type of the
Cartilaginous
Bony
Skeleton
Location of
Ventral
Terminal
mouth
Gills &
5-6 pairs
4 pairs with
Operculum
without
operculum
operculum
Air bladder
absent
present
Types of
placoid
Cycloid &
Scales
ctenoid
Habitat
Mostly marine
Both in fresh
water and
marine water
Types of tissues are : a) epidermal tissue system
(b)ground or fundamental tissue system (c)Vascular or
conducting tissue system.
Tissues are :
(a0epidermis (b) cortex (c) Xylem and Phloem
Formula: % K(5) C 1+2+(2) A(9) + 1 G 1
Floral Diagram:
a. From Chamber B to A
b. chamber B
c. chamber A
1
1
1
1
1+½+½
2
1+½+½
2
1+½+½
2
1+1
1+1
2
2
1+1+1
3
1+1+1
3
6x ½ =
3
6x ½ =
3
1+2
3
1+1+1
=3
3
17
18
19
20
21.
22
23
24
Write any 3 correct differences
Cyclic
Non- cyclic
Photophosphorylation
Photophosphorylation
1. Only PS-I
1. Both PS-I & PSinvolved
II are involved
2. No photolysis of
2. Photolysis of
water
water takes
place
3. Only ATP is
3. Both ATP &
formed
NADPH + H+ are
formed
Neat labeled diagram
Villi - definition
a) Depolarisation of atria
b) Depolarization of ventricles
c) Repolarisation of ventricles
First sound ‘lubb’ is produced at ventricular
systole by the closure of atrio ventricular
valves to prevent the back flow of blood from
ventricle to atria.
Second sound ‘dup’ –ventricular diastole,
closure of semi lunar valves to prevent the
back flow of blood from great arteries to
ventricle
Meiosis: Five stages of Prophase I with brief
explanations and diagrams.
OR
Structure of mitochondrion: Labeling + Neat diagram
Embden , Mayerhof & Parnas gave the Glycolytic
pathway which is called EMP Pathway.
Correct Scheme Fig. 14.1
Or
Dark reaction of photosynthesis.
Correct step wise explanation and cycle Fig. 13.8
(P.217)
a) Growth Hormone-Anterior lobe of pituitary- cell
division- Dwarfism
b) Vassopressin- Posterior lobe of pituitary- PCTDiabetes incipidus
c) Insulin- Pancrease- Hepatic cells-Diabetes
milletus
d) Thyroxine-Thyroid gland-Cretinism
e) Parathyroid- Parathyroid glandHypoparathyroidism
OR
A) IC= TV+IRV
B) EC= TV+ERV
C) FRC= ERV+RV
D) VC= IRV+ERV+TV
E) TC= IRV+ERV+TV+RV
Ans: Tobacco contains a large number of chemical
substances including nicotine, alkaloid etc. Nicotine
stimulates adrenal gland to release adrenaline and
non- adrenaline into blood circulation, both of raises
blood pressure and increase the heart rate. Smoking
is associated with increased incidences of cancer of
lungs, urinary bladder and throat, bronchitis’s,
1+1+1
=3
3
2+1=3
3
1+1+1
=3
3
½ x6
3
5x1=
2+3
5
1+4
1+1+1+1+1
5
1+1+1+1+1
4
25.
26.
emphysema, coronary heart disease, gastric ulcer etc.
Tobacco chewing is associated with increased risk of
cancer of the oral cavity. Smoking increase the carbon
monoxide (CO) content in blood and reduces the
concentration of heamoglobin behind the oxygen. This
cause oxygen deficiency in the body or emphysema.
Ans: (a) Diabetes (b) Drug abuse (c) Depression
(d) Obesity € Cancers
( f) Cardio vascular
diseases
Only a person having healthy lifestyle can lead a long
life. But in present scenario the youngsters are
spending hours in front of computer screen working.
They eat fast food and are consuming alcohol, drugs
and smoke cigarette. They are engaged in many other
activities which cut their life-span. So it is not easy for
oneself to protect him/her from lifestyle disorders
which lead to health problems. In such situations living
at least for 70 years will be a dream. But it is possible
in disciplined style of living, in which health priorities
are taken over financial benefits. Physical activities
along with exercises are important part of disciplined
life. So by traditional ways of living we can live a
healthy life for more than 100 years while average life
of a man is around 67 years while of a woman is 70
years.
6x½=
3
3
SAMPLE PAPER 8
BIOLOGY
CLASS – XI
MAX.MARKS:70
BLUE PRINT
UNIT
Diversity in living world
Structural
organization
in
plants and animals
Cell: Structure and Functions
Plant Physiology
Animal Physiology
OTBA
TOTAL
LA
------
VBQ
1(5)
1(5)
1(5)
3(15)
1(4)*
1(4)*
SA II
1(3)
3(3)
2(3)
2(3)
2(3)
2(3)
12(36)
SA I
2(2)
1(2)
VSA
-
1(2)
1(2)
1(1)
2(1)
2(1)
5(10)
5(5)
TOTAL
3(7)
4(11)
4(12)
6(15)
6(15)
3(10)
26(70)
Figures outside the bracket indicate the number of questions and the figures inside indicate the marks.
*VBQ-Value Based Question
CLASS – XI
SAMPLE PAPER 10
BIOLOGY
MAX.MARKS:70
GENERAL INSTRUCTIONS
1. All questions are compulsory.
2. This question paper consists of four sections A,B,C, and D. Section A contains 5 questions of 1mark
each. Answer them in one word or one sentence. Section B has 5 questions of 2 marks each. Answer
them in 30-40 words each. Section C has 12 questions of 3 marks each. Answer them in 40-50 words
each. Section D has 4 questions, of which one question is Value Based and carries 4 marks and the
other three questions carry 5 marks each. Answer them in 80-120 words each.
3. There is no overall choice. However an internal choice has been given in 1 question of 2 marks, one
question of three marks, and all the 3 questions of 5 marks weightage. Attempt only one of the
choices in such questions.
4. Wherever necessary, the diagrams drawn should be neat and properly labeled.
Section A
1. The common name of rice is simpler than its scientific name Oryza sativa. What
is the advantage of a scientific name?
2. A plant cell when kept in a certain solution got plasmolysed. What was the nature of this solution?
3. A farmer adds Azotobacter culture to the soil before sowing maize. How does it increase yield of maize?
4. What do you mean by the following statement ‘Omnis cellulla-e cellula’?
0
5. What will happen to an enzyme if it is heated to 80 C?
Section B
6. Cnidarians exhibit 2 basic body forms called polyp and medusa. Enlist two differences between them.
OR
Differentiate between vegetative and reproductive bud. What can be the two positions
of reproductive buds in plants?
7. What is Kranz anatomy? Name two plants having this anatomy.
8. Apoplastic pathway of water is blocked beyond endodermis. Name the structure responsible for this
blockage and what is its chemical nature?
9. What is the difference between metaphase of mitosis and metaphase I of meiosis?
10. (a) Apart from nucleus, name other the two cell organelles which contain their own
genetic material.
(b) State two characteristics of these 2 organelles.
Section C
11. Write 3 differences between anatomy of dicot root and monocot root.
OR
Draw a diagram of alimentary canal of cockroach and label gizzard, salivary gland,
crop and hepatic caecae.
12. What is alternation of generation? Diagrammatically show the process with an example.
13. Despite the absence of a heart or circular system in plants, the water is transported to tips of trees as tall as
100 feet. Briefly describe the driving force involved in the process.
14. Enlist 3 points of differences between cyclic and non-cyclic photophosphorylation.
How a proton gradient is created within a chloroplast across the thylakoid membrane?
15. The petals in a flower are arranged in a particular pattern. Discuss any 3 such arrangement with an
example for each.
16. The enzymes alter the rate of a reaction. Give reason. With the help of a graph, compare the rate of an
enzymatic reaction with a non-enzymatic reaction.
17. Fill up the gaps A.B,C D and E of events occurring during Meiosis-I Also mention the phase in which the
following events occur.
Leptotene
____________ A__________________
___B_____
Bivalents and synaptonemal complex are formed.
Pacytene
________C__________
____D____
dissolution of synaptonemal complex. Separation of
recombined homologous chromosomes.
Diakinesis
________E________
18. Distinguish between a glycosidic, peptide and phosphodiester bond.
19. a) Write down any 4 specific features of phylum arthropoda.
b) Give the scientific name of the living fossil, of the phylum arthropoda
21. Name the three methods of locomotion seen among protists, with an example for each.
22. Draw a labelled structure of cardiac muscle and state how is it different from striated and non striated
muscle.
Section D
23. Raman lives in a coastal village. He is the son of a fisherman. Whenever any unwanted animal comes in the
net, instead of killing it, he puts it back in the sea.
Answer the following questions based on above information: (4)
i. What would have happened, had he killed those animals?
ii. Give one reason to justify that Raman’s action is environment friendly.
iii. How can you contribute in the preservation of flora and fauna around you? Mention any
two steps.
24. Plasma membrane is quasifluid in nature. Which model explains this nature of membrane? Who proposed
the model? Explain the model with diagram.
(a)
(b)
(c)
OR
Give two examples of drugs that are the secondary metabolites.
What is the difference between the composition of chitin and cellulose?
What are nucleosides? Name the four of them present in DNA.
25. What is secondary growth of plants? How the secondary vascular tissues are
formed in the stem during the process ? Explain with the help of diagrams.
OR
a) Draw a neat labelled sketch of a nerve cell.
b) Distinguish between a) tendon and ligament b) dense regular and dense irregular connective tissue.
26. (a) Describe the process of progressive reduction of one molecule of nitrogen
during nitrogen fixation in leguminous plants.
(b) Name the oxygen scavenger molecule present in root nodules.
(c) Mention the function of the following:
i) Boron
ii) Zinc
OR
Give the schematic representation of C3 cycle. State any four differences
between C3 and C4 cycle.
MARKING SCHEME
VALUE POINTS
Q.NO
It is universal.
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
12.
13.
14.
15.
Solution is hypertonic.
It fixes atmospheric nitrogen, enriches nitrogen content of soil.
New cell formed from pre-existing cell.
Enzyme gets denatured
Polyp : Sessile, cylindrical, reproduces asexually
Medusa : free swimming, umbrella shaped, reproduces sexually.
The wreath-like arrangement of bundle sheath cells around vascular bundles
-Maize, Sorghum
Casparian strip, Suberin
Metaphase of mitosis
Metaphase I of meiosis
1. single equatorial plate formed.
1. two equatorial plates formed.
2. all chromosomes aligned singly 2. homologous chromosomes
on equator.
aligned in pairs.
3.Chromosomes retaining
3.
chromosomes
undergo
parental genes with no
recombination
and
show
variations.
variations.
(a)mitochondria;plastid.
(b) double membrane organelle, circular DNA, 70 S ribosome, self replicating
Dicot root
Monocot root
1. pith reduced or absent.
1. pith is conspicuous.
2.vascular bundles generally
2. polyarch vascular bundles.
tetrarch.
3. secondary growth occurs.
3. secondary growth absent.
4. open vascular bundles.
4. closed vascular bundles.
Marks
1
1
1
1
1
1+1=2
1+1/2+1/2=
2
1+1=2
Any 2
1+1=2
1+1=2
Any 3
points
3
1+2=3
OR
Correct diagram on page 113;
fig. 7.16 , Correct 4 labelings asked
.
Correct definition
1+2=3
diagram of life cycle
Major force - transpiration pull
½+1½+1=3
supported by cohesion, adhesion, surface tension, explanation
Cyclic photophosphorylation
Non-cyclic photophosphorylation
Any 3
excited electron comes back to the excited electron never comes back to the reaction
3
reaction centre.
centre.
only photosystem I is activated
photosystems I and II activated.
only ATP molecule is formed
ATP and NADPH formed.
No photolysis of water occurs
photolysis of water occurs
(a) splitting of water molecule on inner side of thylakoid membrane producing H+
3
(b) transfer of H+ across the thylakoid membrane by hydrogen carrier.
(c) NADP reductase is located on stroma side of thylakoid membrane. Protons
are used in reduction of NADP to NADPH, thus reducing conc. of H+ in
stroma.
Any 3
3
16.
17.
18.
19.
20.
21.
22.
23.
24.
25.
26.
Types of aestivation in corolla : (a) Valvate- calotropis (b) Twisted- china rose,
lady’s finger and cotton (c) Imbricate- Cassia and gulmohur (d) Vexillary- pea
and bean (any 3)
Enzymes increase the rate of reaction without being used up.
reduce the activation energy of reactants.
-Graph on page 156. fig. 9.6 NCERT
A – Zygotene
B – crossing over occurs
C – Diplotene
D – terminalisation of chiasmata.
One point of difference between each.
symmetrical, triploblastic, segmented and coelomate, chitinous exoskeleton,
jointed appendages, gills, book gills, book lungs or tracheal system, Circulatory
system is of open type. Sensory organs like antennae, eyes (compound and
simple), statocysts or balance organs are present. Excretion takes place through
malpighian tubules. They are mostly dioecious. Fertilisation is usually internal.
They are mostly oviparous.
Living fossil – Limulus (King crab)
Amoeba- pseudopodia, Euglena – flagella, Paramaecium- cilia
Diagram with labellings, one point of difference
i)It would have contributed in disturbing the ecological balance.
ii. He is aware of conserving biodiversity.
iii. Creating sensitivity, by not using products derived from animals, by spreading
awareness in
other community members about the importance of biodiversity, by developing
empathy and love for all living organisms.
Fluid Mosaic Model
(½)
Singer and Nicholson (1 )
correct explanation
(1½)
diagram page 131, fig. 8.4 (2 )
OR
(a) Rubisco (1)
(b) Chitin made of N-containing polysaccharide. Cellulose made of
glucose units. (½+ ½ )
(c) Inhibitor closely resembles the substrate and competes with the
substrate for the active site of enzyme, hence reduces the rate of
reaction.
(1)
(d) Meiosis II results in reducing the DNA content to normal amount.
(2 )
-correct definition (1)
-correct explanation and diagram on page 94-95, fig. 6.9 (2+2)
OR
Correct diagram with labellings (3) one point of difference between each.(2)
Schematic diagram (3), leg hemoglobin (1) pollen germination, Auxin synthesis
(1)
OR
Correct diagram (3) , any four differences(2)
1+2=3
½+1+½+1=
3
1+1+1=3
Any 4
2+1=3
1+1+1=3
2+1=3
1+1+2=4
5
5
5
CLASS – XI
SAMPLE PAPER 9
BIOLOGY
MAX.MARKS:70
BLUE PRINT
General Instructions:
1. This question paper consists of five sections A, B, C Dand E. Section A consists of 5 questions of one mark
each. Section-B is of 5 questions of two marks each .Section-C consists of 10 questions of three marks
each Section consists of 3 question of 5 marks each
2. and Section E consists of 3 OTBA Questions, out of which 2 Questions of 3 marks and 1 Question of 4
marks(Total 10 marks)
3. All questions are compulsory.
4. There is no overall choice. However, an internal choice has been provided in one question of 2 marks, one
question of 3marks and three questions of 5marks Weightage.
5. Wherever necessary, the diagrams drawn should be neat and properly labeled
_______________________________________________________________________________
SECTION –A
1. Which protein is the most abundant in animal world and name the most abundant protein in the
whole of the biosphere?
2. Identify the type of chromosome given below:
3. How can you revert a freshly plasmolysed plant cell to its normal state?
4. Name the joint present between i) atlas and axis and ii) humerous and pectoral girdle.
5. In some germinating seeds, enzymes mobilize nutrients in the cotyledons. Name the phytohormone
that stimulates the production of such enzymes.
SECTION –B
6. To which phylum does the following belongs to:
a. Nephridia
b. Radula
c. Malphigian tubules
d. Nematocysts
7. How do you represent by symbols the following in a floral formula:
a) Gamosepalous(5 sepals)
b) Bisexual
c) Inferior ovary
d) Actinomorphic
8. What would be expected to happen if:
a. you forget to add auxin to culture medium
b. A rotten fruit gets mixed with unripe fruits.
9. Two potted plants (A and B) were kept in an oxygen free environment in glass containers. Plant A was
exposed to green light ad plant B to sunlight. Which one of the two, is likely to survive longer and why?
.10.Fill in the blanks regarding the enzyme, its substrate and the products formed that are given in
the following table.
Enzyme
Substrate
Product(s)
Dipeptidase
Dipeptides
A
Maltase
B
C
D
Starch
Maltose
SECTION –C
11. Name the following:
a. The fungus that is extensively used in biochemical and genetical work
b. The edible fungus.
c. The fungus that is commonly called as bread mould
d. Smallest living cells known and can survive without oxygen.
e. The cyanobacteria which can fix atmospheric N2
f. The symbiotic association of algae and fungi
12. The following figures indicate the modification of an aerial part of the plant. Mention the type of
modification in each of them. Name the plant in which these modifications are found.
(a)
(b)
(c)
13. Distinguish between striated and smooth muscle. With suitable diagram
14. In a prokaryotic cell, special membranous structures are formed by the extensions of the plasma
membrane. What are they called as? Give any two functions of that structure.
15. Show diagrammatically the cell cycle indicating formation of two cells from one cell.
16. Study the following table and fill in the blanks. The first one is done for you.
Property
Simple diffusion
Facilitated transport
Active transport
(E.g.)Requires
No
Yes
Yes
special membrane
proteins
Highly selective
(A)
Yes
Yes
Transport saturates
No
(B)
Yes
Uphill transport
(C)
No
(E)
Requires ATP energy
No
(D)
(F)
(OR)
Form in which it is
absorbed
Role in plants
Element
Calcium
Zinc
Manganese
17. Show diagrammatically the process of Glycolysis.
18. Study the diagram given below and answer the questions given below.
a. What does the P wave denote?
b. Which wave denotes depolarization of ventricle?
c. By counting which complex the rate of heart beat is determined?
19. Name the following:
a) The hormones released by posterior pituitary
b) The hormones synthesized by the thyroid follicles
c) The hormones secreted by the islets of langerhans in pancreas.
20. Give one antagonistic function of each of
(i) Gibberellins—Abscisic acid
(ii) Cytokinin --- Ethylene
(iii) Ethylene --- Auxin.
SECTION –D
21. Explain the structure of human eye with a diagram.
OR
Explain the structure of human ear with a neat diagram.
22. What are the steps involved in the catalytic cycle of an enzyme? Mention the effect of
temperature and pH on enzyme action.
OR
Explain the five phases of Prophase—I during Meiotic cell division
competitive Inhibitors,
23. With the help of a schematic diagram explain the process of Calvin cycle.
OR
With the help of schematic diagram explain the Hatch and Slack pathway.
SECTION –E (OTBA)
RJ’s lifestyle is characteristic of many working people who tend to focus more on their careers than their
health. This kind of lack of concern for their health is extremely disturbing and alarming. It is because of this
that incidences of non-communicable diseases (NCDs) such as heart diseases have been on the rise. Noncommunicable diseases (NCDs) are diet-related chronic diseases and the main ones include heart
diseases, obesity, diabetes, hypertension and different cancers. According to the World Health Organisation
(WHO), more than nine million deaths worldwide, attributed to Non Communicable Diseases, occur before
the age of 60.
24. Name the NCDS (Non communicable diseases).Why is they called diet related chronic diseases?
25. What do you understand from the report given by NHMS? How can this rise in NCDS and its risk factors be
controlled?
26. Raman lives in a coastal village. He is the son of a fisherman. Whenever any unwanted animal Comes in
the net, instead of killing it, he puts it back in the sea. Answer the following questions based on above
information: (4)
i. What would have happened, had he killed those animals?
ii. Give one reason to justify that Raman’s action is environment friendly.
iii. How can you contribute in the preservation of flora and fauna around you? Mention any
Marking Scheme
Q.NO
1
2
3
4
5
6
7.
8.
9.
10.
11.
12.
13
14.
VALUE POINTS
Collagen , RUBISCO
Submetacentric
Place it a hypotonic solution
a) pivot
b) ball and socket
Gibberellins
e. Nephridia- earthworm
f. Radula - mollusca
g. Collar cells- porifera
h. Nematocysts- cnidaria
Correct symbols
a) No root initiation
b) Ripening of unripe fruits.
B, because the green light get reflected. Hence no food is produced.
Whereas sunlight favours photosynthesis.
A- Aminoacid B-Maltose C-Glucose D- Amylase
a. Neurospora b. Agaricus c. Rhizopus
Leaf tendril- pea spine- cactus, opuntia(any one) storage fleshy leafonion
Any three differences
Mesosomes, They help in cell wall formation, DNA replication and distribution
to daughter cells. They also help in respiration, secretion processes, to
MARKS
½ +1/2= 1
1
1
½ X 2 =1
1
½ X 4=2
½ X 4=2
1+1=2
1+1=2
½ X 4=2
1+1+1=3
1+1+1=3
3
1+2=3
15.
16.
increase the surface area of the plasma membrane and enzymatic content
(any two)
Correct diagram with correct labellings
A- No B-Yes C, D- No , E,F-Yes
1+2=3
½ X 6=3
OR
2+
Calcium- Ca , formation of middle lamella, mitotic spindle(any one)
2+
Zinc- Zn ,enzyme action, synthesis of auxin
2+
Manganese- Mn ,splitting of water during photosynthesis, activates
many enzymes for photosynthesis, respiration.(any one)
17.
18.
Correct diagram with all the steps in the correct sequence
a) P –Wave- depolarization of atria
b) QRS
c) QRS
19.
a. Vasopressin, Oxytocin
b. Thyroxine (T4) , Tri iodothyronine (T3)
c. Insulin , Glucagon
20
21.
22.
½ X 6=3
1+1+1+=3
½ X 6=3
3x1=3
(i)Gibberellins breaks seed dormancy and bud dormancy, while ABA induces
dormancy
(ii) Cytokinin retards ageing while Ethylene promotes ageing.
(iii)Ethylene promotes abscission while auxin prevents abscission
Correct explanation with diagram.
1.First, the substrate binds to the active site of the enzyme, fitting
into the active site.
2. The binding of the substrate induces the enzyme to alter its shape,
fitting more tightly around the substrate.
3. The active site of the enzyme, now in close proximity of the
substrate breaks the chemical bonds of the substrate and the
new enzyme- product complex is formed.
4. The enzyme releases the products of the reaction and the free enzyme is
ready to bind to another molecule of the substrate and run through the
catalytic cycle once again.
23.
24.
25.
Influence of each factor- temperature, pH, substrate concentration
Or
Five phase with correct sequence and explanation
Cycle and explanation
Or
Diagram and explanation
Diseases like obesity, diabetes hypertension, cardiovascular
diseases,PEM(protein energy malnutrition like Kwashiorkar, marasmus,
hypo/hypervitaminosis,myopia,hypermetropia ,cancer aresome of the NCDS.
All the above said diseasesare caused either due to excess amount of fatty
food or food have less nutrition like protein,vitamins and minerals.These are
caused due to excess amount of junk foodand lack of physical exercise due
to sedentary life style.
From the report we understand that diabetes, hypertension ,obesity have
increased many foldsworldwide over the past few decades but most of the
peopledonot realisethat their health is in danger.
1.By bringing awareness about the disease.
2.By developing good traditionalfood habits from young age.
3.By developinggood habits of regular exercise.
4.By introducing the value of balanced diet.
3+2=5
3+2=5
3
3
26.
i)It would have contributed in disturbing the ecological balance.
ii. He is aware of conserving biodiversity.
iii. Creating sensitivity, by not using products derived from animals, by
spreading awareness in
other community members about the importance of biodiversity, by
developing empathy and love for all living organisms.
4