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INDIAN SCHOOL MUSCAT
WORK SHEET –BIOLOGY
Chapter 6
Life Processes (Nutrition)
CLASS: X
Date: 06.04.2015
1
What is the role of saliva in the digestion of food?
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2
What is life process? Give some examples of life processes.
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3
What are the necessary condition for autotrophic nutrition and what are the by
products?
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4
Name the type of nutrition
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a) Fungi like bread mould , yeast , mushroom breakdown the food
materials outside the body and absorb it.
b) Cuscuta , lices and ticks derive nutrition from plants or animals
without killing them.
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In the experiment “Light is essential for photosynthesis” why do the uncovered
part of the leaves turn blue black after putting iodine solution?
a) Small intestine is the site of complete digestion of carbohydrate, protein
and fat. Name the end products of their digestion.
b) The leaves of a plant first prepare food A by photosynthesis and then
the food A is converted into food B. Name A & B.
Write the aim of the experiment when potted plants kept with potassium
hydroxide and without potassium hydroxide under a bell jar to assess the rate of
photosynthesis.
Leaves of a healthy potted plant were coated with Vaseline to block the
stomata. Will this plant remain healthy for long? State three reason for your
answer.
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a) What are the major events occurring during the process of
photosynthesis?
b) Name the energy transformation taking place in the process of
photosynthesis.
Photosynthetic steps need not take place one after another immediately. Clarify
the statement suggesting an example.
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2
OR
How is food produced by desert plants, as the stomata remain closed during the
day?
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Chewing a piece of bread in the mouth for a period of time makes it sweeter.
Give reason.
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12
Write the name / terms associated with the following
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a) the natural phenomenon involved in autotrophic nutrition
b) the organelle of the leaf in which photosynthesis takes place
c) the photosynthetic pigment which absorb light energy
d) the structures associated with vascular bundle
13
Which digestive secretion does not contain any enzyme but is very important in
the process of digestion. Comment on it.
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14
Why is small intestine in herbivores longer than in carnivores?
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15
Explain the mode of feeding in amoeba. Draw diagrams to illustrate
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16
Match the following pair of statements (associated with an experiment in
photosynthesis) and place them in the correct order in which they occur
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Stages in starch test
Reason
Wash leaf in water
Kills leaf
Boil leaf in water
Soften leaf
Cover with iodine solution
Removes chlorophyll
Boil leaf in ethanol
Inflammable (prevent fire)
Use of water bath
Stain starch
17
What are stomata? Why is there a need for opening of stomata in leaves during
the day? Mention how guard cells help to perform these functions.
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18
What is peristalsis? . Explain both mechanical as well as the chemical part of
digestion of food in the mouth of man.
3
19
Villi are richly supplied with blood vessels and take the absorbed food to each
every cells of the body where it is utilized. Mention the name of the major
absorbed nutrients and their utilization.
3
20
Parwati collected his saliva and mixed it with liquid A in the test tube. In another
test tube he took only liquid A. After 10 minutes, she added a few drops of
iodine solution in the mixture in the first test tube. It did not show any colour but
when she treated the other test tube with iodine, a blue black colour appeared.
Now answer –
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a) What is the aim of this activity?
b) What is liquid A?
c) Why did the first test tube not shown any colour change with
iodine while the second one did?
d) Which enzyme is responsible for such a result?
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Study the diagram below and answer the following questions
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a) The plant was kept in the dark room for 24 hrs before being placed
in sunlight. Why?
b) What is the function of the potassium hydroxide solution?
c) The apparatus was set up as in the diagram and left for about
12 hrs. Starch test were carried out on
i) Leaf
A
ii) Leaf B
iii) Leaf C
Comment on the conclusion drawn from the procedure conducted on leaf A ,B
and C
25
Below is a diagram of the human digestive system .Label all the parts.
Also write the letter and name the part of the digestive system
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applicable
I) where is Bile
a) Made?
b) Temporarily stored
c) Mixed with food
d) What does bile do?
II) Where is Acid
a) Made?
b) Name the acid
c) How the part is protected?
III) Where Trypsin(enzyme)
a) Made?
b)Name the substrate
c) Write the end product
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I) Pancreas produces a juice which contains three important enzymes.
Name the enzyme which act upon
i) Starch
ii) Protein
iii) Fat
II) Small intestine is the site for complete digestion of carbohydrate, protein and
fat .Write down the changes happens to the food in the small intestine before its
absorption
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INDIAN SCHOOL MUSCAT
WORK SHEET – BIOLOGY
Chapter 6
Life Processes (Respiration)
CLASS: X
Date: 28.04.2015
1
Gills ,lungs ,skin ,trachea are respiratory organs of different organisms .
Mention any two common features seen among them with reason .
1
2
Name the first breakdown product of glucose during respiration. Where does it
take place?
1
3
What is anaerobic respiration? What happens during anaerobic respiration in
yeast?
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4
What is the specific reason for muscle cramps that are caused due sudden
physical activity?
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5
Breathing through nose is better than breathing through mouth. Why?
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6
In test tubes A and B, yeast was kept in sugar solution. In test tube A added a
thin film of oil and test tube B kept opened. Which product of respiration would
you expect in the test tubes A and B.
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During the respiration of an organism A one molecule of glucose produce 2 ATP
molecule where as in the respiration of organism B ,one molecule of glucose
produce 38ATPmolecule .Which of the organism A or B has anaerobic
respiration ? Suggest any other major difference between anaerobic and
anaerobic respiration.
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8
What is the significance of residual volume of air that lungs always contain?
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9
What are the adaptations in plant leaves to satisfy the oxygen requirement for
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aerobic respiration?
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Explain the role of alveoli in the lungs with respect to its structure and function.
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11
Name the organs in plants which are meant for exchange of gases.
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12
What is Adams Apple? What is covering of the lung known as?
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13
What are the major gaseous exchange activities in plants during the day and
night?
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14
Air is exhaled through lime water and air is passed through lime water using
pichkari. In which case lime water turns milky first? Give reason
2
15
What are the different pathways in which glucose is oxidized to provide energy
in various organisms? Explain by writing the reactions involved
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16
1. Name the source of oxygen for terrestrial animal and aquatic animals. 2.
Why the rate of breathing in aquatic organisms are faster
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than terrestrial animals.
17
Mention the role of hairs and mucus in the nasal passage of human beings.
3
Why does the air passage does not collapse?
18
Briefly explain the breathing cycle ,specifically during air is taken in
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19
From the two lists below ,match each structure with its correct function ,
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associated with respiratory system in human being.
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Structure
Function
1. The nasal cavity
1. Produce the sound
2. Epiglottis
2.Carries air down the lungs
3. Larynx
3. warm ,moisten and filter the air
4. Alveoli
4 Separate thorax from the abdomen
5.Diaphragm
5. Prevent entry of food to trachea
6. Trachea
6. Gas exchange takes place
Shortly explain how oxygen and carbon dioxide is transported to all parts of our
body. Mention the significance of hemoglobin.
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22
Draw a neat well labeled diagram depicting human respiratory system. Explain
in brief the role of lungs in the exchange of gases.
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5
From the flow chart given above answer the following questions.
a) What is the source of glucose molecule involved in cellular
respiration in plants?
b) What is the source of glucose molecule involved in the
cellular respiration in animals?
c) Out of the three types of reactions given in the flow chart,
which reaction can be termed as anaerobic? (write the number
specified in the chart )
d) Out of the three types of reactions given in the flow chart,
which reaction can be termed as aerobic? (write the number specified
in the chart )
e) Name the three carbon compound formed during anaerobic
respiration in muscle.