iii – bio - drarvindsbiology.com

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TEST CODE : 4033
HINTS OF AIPMT MOCK TEST – III – BIO
Answer of Q59 is obviously (c).There was a misprint in the Ans Key.
2. (c)
Hint:
A) Cucumaria (sea cucumber; Echinoderm) –
Water vascular system
B) Exocoetus (flying fish) – operculum
C) Hemidactylus (wall Lizard) – Scutes (external
scales)
D) Neophron (vulture) – Gizzard
3. (c)
Hint: In Latin Repere or Reptum means to crawl
or creep.
4. (b)
Hint: Enterokinase is secreted from small
intestine and chymotrypsin is released from
pancreas. (i) & (iii) are correct.
5. (b)
Hint: Ameloblasts are enamel forming cells.
Dentine is formed by odontoblasts.
Sphincter of Oddi guards the opening of
Ampulla of Vater. The opening of bile duct
is guarded by the sphincter of Boyden. (iii),
(iv) & (v) are correct.
6. (d)
Hint: Amount of CO2 delivered by 100 ml of
deoxygenated blood is 4 ml. Amount of O2
that can bind with 1 g of Hb is 1.34 ml.
10. (b)
Hint: The process of muscle contraction is
slower in smooth muscle as they have a
poor formed SR.
11. (a)
Hint: Tophi are formed in gout. In rheumatoid
arthritis, pannus are formed.
13. (b)
Hint: (iii) and (iv) are correct. Copepods are
ectoparasites of marine fish. Cuscuta is a
parasite.
17. (c)
Hint: (i), (ii) and (iv) are correct (iii) false as it is
4000 – 11000 mm-3
19. (c)
Hint: Foetal movements are observed during
fifth month of pregnancy. (i), (ii), & (iii) are
correct.
20. (b)
Hint: Menstrual blood normally does not clot
due to the presence of fibrinolysin in it. In
pseudo-precocious puberty,
gonadotropins are low.
levels
of
21. (a)
Hint: (i), (ii) & (iii) are false only (iv) is correct.
(i) False; Ascending limb of loop of Henle is
permeable to electrolytes and almost
impermeable to water
(ii) False; The descending limb is permeable to
water
and almost impermeable to
electrolytes
(iii) False; DCT is capable of reabsorbing HCO

+
+
3 and secreting K and H ions.
23. (c)
Hint: AABBcc will only make one type of
gamete – ABc while AaBbCc, will make 8
types of gametes. To make a completely
heterozygous offspring i.e., AaBbCc, the
gamete ABC has to fuse with abC which will
be made in a fraction of 1/8.
25. (c)
Hint: (ii), (iii) & (iv) are true.
28. (b)
Hint: (i) & (ii) are correct. Trichoderma are free
living fungi. Nucleopolyhedroviruses have
narrow spectrum insecticidal applications.
32. (b)
Hint: Frequency of recessive allele is 0.4.
Frequency of dominant allele shall be 0.6
(1.0 – 0.4 = 0.6). Frequency of carrier (2 Aa)
would be 2 x 0.6 x 0.4 = 0.48 and hence 96
out of 200. As the stage of lethality is not
mentioned, it is presumed that the same will
not occur in the embryo stage.
33. (c)
Hint: Pethidine is a synthetic drug. Heroin is
diacetylmorphine and its impure form is
called smack. (i), (ii) & (iii) are correct.
34. (b)
Hint:
(i) False; Complex III is cytochrome bc1
complex
(ii) True; It is cytochrome c oxidase complex
with cyt a and cyt-a3
(iii) Complex V is ATP synthase complex
(iv) True
2
36. (a)
Hint: (ii) & (iii) are correct.Jaya Ratna are semidwarf high yielding varieties of rice.
Saccharum barberi originally grown in North
India, has poor sugar content and yield. The
variety having higher sugar content and
yield is Saccharum officinarum.
38. (c)
Hint: Bottled juices are clarified with the help
of pectinases and proteases. (i), (iii), and
(iv) are correct
body not mentioned and in the diagram the
cardiac part is mislabeled)
3. and 4. are true.
48. (b)
Hint:
A) Skull has 22 bones (8 cranial, 14 facial)
B) Correct C7, T12, L5, S1, C1
C) Wrong – 8th, 9th, 10th are false ribs
D) Correct
39. (b)
Hint: The larger the plasmid, the more inefficient it
is as a cloning vector, as larger plasmids are
less easy to manipulate and less efficient in
transformation, pBR322 is the first artificial
cloning vector. (i) & (iii) are wrong.
40. (b)
Hint: Over 95% of all existing transgenic
animals are mice. -1-antitrypsin is used for
emphysema. (i) & (ii) are wrong.
49. (a)
Hint:
1. Wrong, Vitreous chamber and has
vitreous humour.
2. Correct
3. Wrong, Fovea is a central pit within the
macula lutea.
4. Wrong, Blind spot lies medial to the
posterior pole of the eye.
42. (d)
52. (a)
Hint: Whisky and rum are produced by
distillation while wine & beer are produced
without distillation. Full potential of
Pencillin as an antibiotic was established by
Chain & Florey. Large holes in Swiss
cheese are due to Propionibacterium
sharmanii. Rouquefort cheese is ripened by
growing fungi on them.
Hint:
 Cortisol, Catecholamines & Glucagon all
lead to increased glucose levels.
 Cortisol promotes Gluconeogenesis
 Catecholamines promote breakdown of
Glycogen to glucose
 Insulin decreases blood glucose level
 Glucagon increases blood glucose level
43. This a Q frm a prev Yr paper.All options
seem to be correct but, photochemical
smog is the best answer ,as in the Q “fine
air particles”is mentioned.
53. (a)
Hint: (iii) and (iv) are incorrect. Facilitated
Diffusion is specific and sensitive to
inhibitors.
Hint: Only (i) is correct. During pregnancy,
levels of cortisol and thyroxine are
increased several folds in the maternal
circulation. Major organ systems of foetus
are formed by the end of 12 weeks. The
cells of blastocyst are arranged into inner
cell mass and outer cell mass.
45. (a)
55. (c)
Hint: Abingdon tortoise became extinct after
introduction of goats. Superior barnacle
Balanus excludes the smaller barnacle
Chathamalus.
Hint: Rete testis, Epididymus, Vas deferens and
Vasa efferentia are the male accessory ducts.
44. (b)
47. (b)
Hint:
1. False, Human teeth are diphyodont,
heterodont and thecodont
2. False, the Body lies between cardiac and
Pyloric as per all standard books.( In NCERT
60. (c)
Hint: (i), (iii) & (iv) are correct. When an animal or
plant endangered and needs urgent
measures, ex situ conservation is the
desirable approach.
61. (d)
Hint: All are examples of convergent evolution
(Analogous) except (d) which is an example
of Homologous organs.
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62. (b)
Hint: Nasal septum is hyaline cartilage.
Hint: (i) and (iii) are incorrect.
82. (c)
63. (c)
Hint:
(i) True; unicellular colonial or filamentous
(ii) False; can be aquatic or terrestrial
(iii) True
(iv) True
Hint: (i), (ii) & (iii) are incorrect. Majority of drugs of
abuse are obtained from flowering plants. Heroin
is a depressant. Cannabinoids interact with
receptors mainly present in the brain.
64. (d)
85. (d)
Hint: Spirogyra – alga
Lycopodium – Pteridophyta
Sequoia – Gymnosperm
Sphagnum – Moss
65. (b)
Hint: Salvinia, Azolla, Selaginella and Cedrus
are heterosporous.
Hint: (i) & (iii) are false.
(i) False; It is a moss which is homosporous
(ii) True; ‘A’ is the sporophyte which is
diploid and ‘B’ is haploid
(iii) False; ‘A’ is dependent on ‘B’
(iv) True.
Hint: For actively mobile elements, symptoms first
appear in older tissues. Rhodospirillum is
anaerobic free living nitrogen fixing microbe. (ii)
& (iii) are correct.
87. (b)
88. (b)
Hint: A and C are correct.
66. (b)
89. (c)
Hint: Cycas does not have a female cone.
Hint: (ii), (iii) & (iv) are correct. Cocaine is
commonly called coke or crack. Smack
belongs to opioids.
70. (a)
Hint: Ctenidia are gills of mollusca.
71. (c)
Hint:
a) Nucleic acids are macromolecules and
remain in the acid insoluble fraction.
b) Watson and Crick model exhibits the
secondary structure.
c) Exception is lipids which have low mol. wt.
d) True
74. (c)
Hint: Pear is a pome and its edible part is
thalamus. (i), (ii) & (iii) are correct.
75. (a)
Hint:
Fabaceae
has
exalbuminous
(nonendospermic) seed. In solanaceae, anthers are
epipetalous and seed is endospermic.
76. (a)
Hint: The mechanical support to the growing
parts of the plant such as young stem and
petiole of a leaf is provided by collenchyma.
77. (a)
Hint: Albugo is Phycomycetes.
78. (b)