1. No category

TEST CODE : 4040
BIO. HINTS OF QUANTUM MOCK TEST – X
(AIIMS Pattern)
BIOLOGY
18. (d)
7. (c)
Hint: (iii) and (iv) are correct. Baculoviruses are
excellent candidates for species specific
insecticidal applications.
Hint:
(i) False; Oogenesis starts in embryonic age.
(ii) False, 1° spermatocyte undergoes meiosis
to form the 2° spermatocyte
(iii) False; 40% sperms should have vigorous
motility and 60% should have normal
morphology.
(iv) False; The 1st meiotic division is
completed at puberty and the 2nd meiotic
division is completed on fertilization.
11. (b)
19. (b)
Hint: DNA fragments can be visualized on
exposure to UV radiations and not visible
light. Some restriction enzymes have
ambiguities in their recognition sites, e.g.,
EcoR II, so that they may recognize upto 4
different target sequences.
Hint:
 Brinjal, Belladona & Petunia have this
floral formula (Solanaceae)
 Onion & Colchicum (Liliaceae)
 Sesbania & Lupin (Fabaceae)
12. (a)
Hint: (ii) & (iii) are Parenchymatous. (i) is
Sclerenchyma; (iv) is Collenchyma.
Hint: Cocaine is a stimulant. Amphetamine is a
synthetic drug.
8. (b)
Hint: Only (iii) is correct. Porphyra is a Red alga, it
has chlorophyll a, d and no motile stages. Chl
a, b and Algin is a feature of Brown algae.
13. (d)
Hint: Myxine (hagfish) is a Cyclostomata. These
are
all
features
of
Chondricthyes.
Cyclostomes have larval stage, they have
no teeth, no scales and are ectoparasites.
16. (a)
Hint:
(i) Wrong, as it gets depolarised.
(ii) Wrong, gets a negative charge outside.
(iii) True
(iv) Wrong, gets a positive charge inside.
20. (b)
21. (d)
Hint: In chlorophyceae, the flagella are 2–8 in
number, equal in size and apical in
position. In phaeophyceae, the flagella
are 2 in number, unequal in size and
lateral in position.
23. (a)
Hint: Xanthomonas esculenti causes leaf spot
disease of lady finger. Bacterial blight of rice
is caused by Xanthomonas oryzae.
27. (b)
Hint: Malaria, Dengue and Elephantiasis have
mosquitoes as vectors.
17. (c)
30. (b)
Hint:
(i) False, Zona glomerulosa is the innermost
layer of Adrenal Cortex. Sella Tursica is
the bony cavity which houses the pituitary
gland.
(ii) True
(iii) ID,
Goitre
has
symptoms
of
hypothyroidism.
(iv) Androgenic steroids are also secreted by
Adrenal cortex.
Hint: (i) and (iii) are correct. Pomegranate is an
example of Balausta (Berry). Edible part of
coconut is endosperm.
31. (b)
Hint: In Brassicaceae, ovary is superior.
Fabaceae ovary is monocarpellary.
In
32. (d)
Hint: Upper two thirds of cervix is lined by
simple ciliated columnar epithelium while
lower part is lined by non-keratinised
stratified squamous epithelium.
34. (b)
Hint: Gibberellins promote growth of aerial
parts. Ethylene stimulates transverse
growth and inhibit longitudinal growth.
35. (b)
Hint: Papillary muscles are present in the
ventricles. Atria have got musculi pectinati.
37. (a)
Hint: Lateral malleolus is part of fibula.
45. (d) Both false.
46. (a) Both true and R is the correct explanation.
47. (d) (both false)
48. (c) (It is due to low temperature sensitivity
of pyruvate phosphate dikinase of C4 plants).
53. (d)
Hint: Agrobacterium tumefaciens infects broad leaved agricultural crops and not cereals.
54. (b). Both are correct but the reason is not
the correct explanation of the assertion.
56.
(c) Assertion is a correct statement and
reason is a false statement. In heterocysts
PS-II is absent.
57. (b) Both are correct and reason is not the
correct explanation of the assertion.
58. (c) (A true; R false)
Hint: It is due to the pigment haematochrome.