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TEST CODE : 4039
QUANTUM MOCK TEST – IX
(AIIMS pattern)
BIOLOGY HINTS
21. (a)
6. (c)
Hint:
 Tadpole (Ammonotelic) = Maximum water
required
 Frog and Dog (ureotelic) = Moderate water
required
 Pigeon (Bird) uricotelic = Minimum water
required
Hint: Variola virus causes small pox. Chicken
pox is caused by Varicella zoster.
10. (a)
Hint: Only (i) is wrong. The proteins encoded by
the genes crylAc and cryIIAb control the
cotton bollworms while that encoded by
crylAb controls the corn borer.
13. (b)
Hint:
(i) False; Yeast takes 90 minutes to complete
one cell cycle
(ii) False; Interphase lasts for 95% of the cell
cycle
(iii) True; It is replicated in ‘s’ phase
(iv) True
23. (d)
Hint: The figure represents Haplontic life cycle.
All the given plants show haplo-diplontic life
cycle.
24. (d)
Hint: Primary spermatocytes undergo first
meiotic division to produce secondary
spermatocyte. Sperms become full motile
and
mature
in
accessory
ducts.
Mitochondria are present in the middle
piece of sperm. Single ejaculate contains
200 – 300 million sperms.
15. (c)
27. (d)
Hint:
(i) False as fovea has only cones.
(ii) False as stapes attaches at oval window.
(iii) False – upper scala vestibuli and lower
scala tympani.
(iv) True
Hint: Argemone is an example of parietal and
china rose of axile.
16. (d)
Hint:
(i) False; To be taken for 21 days with a gap
of 7 days
(ii) True
(iii) and (iv) false – cause mucus to thicken so
that sperm entry is retarded. IUCD is the
most widely accepted method in India.
17. (b)
Hint:
(i) False, replication is discontinuous.
(ii) True
(iii) Ligase needed frequently to join the
Okazaki fragments.
(iv) False; always polymerises in 5'  3'
direction only.
20. (d)
Hint: Powdery mildews is caused by Erysiphe.
29. (c)
Hint: If the food is rough, it is covered by thin
semipermeable peritrophic membrane secreted
by midgut. Thus injury to the midgut is
prevented.
32. (b)
Hint: (ii) and (iv) are correct. Hashish is a
hallucinogen and is not used clinically.
Diazepam is a benzodiazepine.
33. (b)
Hint: LDPs require a high ratio of Pfr to Pr for the
formation of flowering stimulus. Blue color
results in poor flowering. The most effective
wave lengths are orange and red.
34. (d)
Hint: Partial pressure of O2 in inspired air is
about 159 mmHg and that of CO2 in alveoli
40 mmHg. (All the values as given in the
NCERT).
36. (b)
Hint: Carotid sinus is the baroreceptor located in
the wall of internal carotid artery.
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37. (a)
Hint: Talus is tarsal bone. Joint between incus
and malleus is saddle joint.
44. (b) A and R are correct but R is not correct
explanation of A.
45. (c)
Hint.: A is true; R is false
46. (d) Both false
48. (d) (both false)
49. (c)
Hint: In the majority of plants the stomata
opens in light (day time) and close in
darkness (night). But in succulent reverse
process is occurred. Both red and blue
parts of light are effective though the latter
is slightly more effective.
Diagrammatic representation of stomatal
opening and closing cycle.
53. (b)
Hint.: Both are correct but the reason is not the
correct explanation of the assertion.
55. (b).
Hint: Both are correct but reason is not the
correct explanation of the assertion. The
walls of diatoms are embedded with silica
and thus the walls are indestructible.
56. (d). Both assertion and reason are false
statements. Mycoplasma can survive
without
oxygen.
Mycoplasma
are
heterotrophic in nutrition.
58. (d)
Hint: Cuscuta is a total stem parasite.
60. (d) Both false