Biology I - Section A
1. Somaclonal variation is the variation seen in plants that have been produced by:
1. |
Classical hybridization |
2. |
Mutation breeding |
3. |
Plant tissue culture |
4. |
Genetic engineering |
2. In reference to the given figure, the position of ovary and type of flowers respectively will be:
1. Superior, Hypogynous
2. Inferior, Epigynous
3. Half-inferior, Perigynous
4. Inferior, Epigynous
3. The cell cycle in a typical eukaryotic cell is divided into:
1. Five phases
2. Four phases
3. Three phases
4. Two phases
4. Endoparasites are generally characterised by:
1. |
greatly simplified morphological and anatomical
features and high reproductive potential. |
2. |
greatly simplified morphological and anatomical
features and low reproductive potential. |
3. |
highly developed morphological and anatomical
features and high reproductive potential. |
4. |
highly developed morphological and anatomical
features and low reproductive potential. |
5. Taq polymerase is a:
1. |
thermostable DNA dependent RNA polymerase. |
2. |
thermostable DNA dependent DNA polymerase. |
3. |
thermolabile DNA dependent RNA polymerase. |
4. |
thermolabile DNA dependent DNA polymerase. |
6. Identify the amino acid:
1. Glycine
2. Serine
3. Alanine
4. Lysine
7. Which law is based on the fact that the alleles do not show any blending and that both the characters are recovered as such in the F2 generation though one of these is not seen at the F1 stage?
1. Law of blending Inheritance
2. Law of dominance
3. Law of segregation
4. Law of independent assortment
8. Regarding DNA replication:
I: It is semi-conservative.
II: It is semi-discontinuous.
1. Only I is correct
2. Only II is correct
3. Both I and II are correct
4. Both I and II are incorrect
9. The reaction centres in PSI and PSII in higher plants are respectively called as:
1. P680 and P700
2. P700 and P680
3. P870 and P700
4. P680 and P870
10. Which plant growth regulator is used to initiate flowering and synchronising fruit-set in pineapples?
1. Gibberellins
2. Cytokinins
3. ABA
4. Ethylene
11. What would not be true for a plasmid present in some bacterial cells?
1. |
It is extrachromosomal DNA |
2. |
It is circular and double stranded |
3. |
It gets replicated with the help of ori of chromosomal DNA |
4. |
It confers characters like resistance to antibiotics to bacterial cells |
12. The initial carboxylation reaction:
1. |
occurs in mesophyll cells in C3 plants and in bundle sheath cells in C4 plants |
2. |
occurs in bundle sheath cells in C3 plants and in mesophyll cells in C4 plants |
3. |
occurs in mesophyll cells in both C3 plants and in C4 plants |
4. |
occurs in bundle sheath cells in both C3 plants and in C4 plants |
13. In Pisum sativum, the allele for tallness [T] is completely dominant over the allele for dwarfness [t]. What proportion of the tall progeny of the cross Tt X Tt will be homozygous tall?
1. 1/3
2. 1/4
3. 1/2
4. 3/2
14. Evolutionarily, pteridophytes are the first:
1. |
plants with haplontic life cycle |
2. |
terrestrial plants with dominant gametophytic generation |
3. |
plants to produce flowers pollinated by insects |
4. |
terrestrial plants to possess vascular tissues |
15. Match each item in Column I with one in Column II and select the correct match from the codes given:
|
Column I |
|
Column II |
A |
Ulothrix |
P |
Brown algae with diplontic life cycle |
B |
Ectocarpus |
Q |
Major pigments are chlorophyll a and b |
C |
Fucus |
R |
Brown algae with haplo-diplontic life cycle |
D |
Polysiphonia |
S |
Lack flagella |
Codes:
|
A |
B |
C |
D |
1. |
P |
S |
Q |
R |
2. |
Q |
P |
R |
S |
3. |
Q |
R |
P |
S |
4. |
R |
Q |
S |
P |
16. The RNA polymerase I does not transcribe:
1. 28S rRNA
2. 18S rRNA
3. 5.8S rRNA
4. 5S rRNA
17. Consider the given two statements:
Statement I: |
The large holes in ‘Swiss cheese’ are due to production of a large amount of CO2 by a bacterium named Propionibacterium shermanii. |
Statement II: |
The ‘Roquefort cheese’ are ripened by growing a specific bacteria on them, which gives them a particular flavour. |
1. |
Statement I is correct; Statement II is incorrect |
2. |
Statement I is incorrect; Statement II is incorrect |
3. |
Statement I is incorrect; Statement II is correct |
4. |
Statement I is correct; Statement II is correct |
18. The activator of alcohol dehydrogenase enzyme is:
1. Zinc
2. Magnesium
3. Manganese
4. Molybdenum
19. In China rose stamens are:
1. |
united into one bundle |
2. |
united into two bundles |
3. |
united into more than two bundles |
4. |
having filaments with variable length |
20. In a monocot stem:
I: |
hypodermis is collenchymatous |
II: |
vascular bundles are conjoint and closed |
III: |
phloem parenchyma is absent |
1. Only
I and
II are correct
2. Only
I and
III are correct
3. Only
II and
III are correct
4.
I,
II and
III are correct
21. Identify the incorrect statement regarding cyanobacteria:
1. |
They have chlorophyll a (similar to green plants) |
2. |
They are unicellular and never colonial or filamentous |
3. |
They often form blooms in polluted water bodies |
4. |
Some of them can fix atmospheric nitrogen |
22. In Whittaker’s five Kingdom classification, organisms with eukaryotic cell type and cellular body organisation are kept under:
1. |
Kingdom Monera |
2. |
Kingdom Protista |
3. |
Kingdom Fungi |
4. |
Kingdom Plantae |
23. The chief ‘producers’ in the oceans are:
1. Cyanobacteria
2. Dinoflagellates
3. Diatoms
4. Lichens
24. It is possible to obtain virus-free plants from virus-infected plants using the technique of:
1. Embryo rescue
2. Meristem culture
3. Biofortification
4. Phytoremediation
25. Parthenium,
Lantana and Eicchornia are:
1. |
recently extinct species |
2. |
species adapted to highly arid regions |
3. |
examples of invasive species |
4. |
capable of thriving in arctic and antarctic permafrost |
26. All the following are ‘ex-situ’ methods for conservation of biodiversity except:
1. Zoological parks
2. Botanical gardens
3. Wildlife safari parks
4. National parks
27. The repressor of the lac operon is synthesised:
1. |
all the time |
2. |
only when lactose is present |
3. |
only when lactose is absent |
4. |
only when glucose is present in high amount |
28. Kranz anatomy is not characterised by the presence of:
1. Bundle sheath
2. Palisade mesophyll
3. Spongy mesophyll
4. Stomata
29. A pea plant shows the dominant phenotype. You conduct a single gene test cross to determine the genotype of this pea plant (T = tall, t = short). All progeny of the test cross show the dominant phenotype. The genotype of the plant in question is most likely:
1. TT.
2. TTtt.
3. Tt.
4. tt.
30. In the transverse section of monocot stem, the highlighted portion [marked as X] is:
1. Sclerenchymatous hypodermis
2. Collenchymatous hypodermis
3. Suberised casparian strip
4. Starch sheath
31. Glycerol enters the respiratory pathway after being converted to:
1. PGAL
2. PEP
3. 1, 3 – BPG
4. 2 – PG
32. In plants:
I: Growth is open
II: Differentiation is open
1. Only I is correct
2. Only II is correct
3. Both I and II are correct
4. Both I and II are incorrect
33. The pollen intine is:
1. |
a thin and continuous layer made up of cellulose and pectin. |
2. |
a thick and discontinuous layer made up of cellulose and pectin. |
3. |
made up of sporopollenin and is a continuous layer. |
4. |
made up of sporopollenin and has prominent apertures called germ pores. |
34. Plant species pollinated by water fall into two categories:
(i) |
Those that distribute their pollen to the surface of water |
(ii) |
Those that distribute their pollen beneath the surface of water |
The correct examples of the two categories will be:
|
(i) |
(ii) |
1. |
Vallisneria
|
Sea grasses
|
2.
|
Water hyacinth
|
Sea grasses
|
3.
|
Sea grasses
|
Water lily
|
4.
|
Sea grasses
|
Vallisneria
|
35. Which stage of sewage water treatment is essentially a ‘biological’ treatment?
1. Primary
2. Secondary
3. Tertiary
4. Quaternary
Biology I - Section B
36. Consider the two statements:
Assertion (A): |
Transcription and translation can be coupled in bacteria. |
Reason (R): |
The peptide bond formation in prokaryotes is catalysed by a ribozyme.
|
1. |
Both (A) and (R) are True but (R) does not correctly explain (A) |
2. |
(A) is True but (R) is False. |
3. |
Both (A) and (R) are False. |
4. |
Both (A) and (R) are True and (R) correctly explains (A) |
37. The annual net primary productivity of the whole biosphere is approximately 170 billion tons (dry weight) of organic matter. Of this, the productivity of the oceans is:
1. 55 billion tons.
2. 70 billion tons.
3. 100 billion tons.
4. 120 billion tons.
38. Consider the given two statements:
Assertion: It is better to consider the respiratory pathway as an amphibolic pathway rather than only as a catabolic one.
Reason: Breaking down processes within the living organism is catabolism, and synthesis is anabolism.
1. Both Assertion and Reason are true and Reason correctly explains the Assertion
2. Both Assertion and Reason are true but Reason is not the correct explanation of the Assertion
3. Assertion is true but Reason is false
4. Assertion is false but Reason is true
39. The Ladybird and Dragonflies are useful to respectively get rid of:
1. mosquitoes and aphids
2. aphids and mosquitoes
3. bollworms and corn borers
4. corn borers and bollworms
40. Slime molds:
1. |
form plasmodium that differentiates and forms fruiting bodies bearing
spores at their tips during unfavourable conditions. |
2. |
form plasmodium that differentiates and forms fruiting bodies bearing
spores at their tips during favourable conditions. |
3. |
form plasmodium under favourable conditions and the plasmodium
differentiates and forms fruiting bodies bearing spores at their tips during unfavourable conditions. |
4. |
form plasmodium under unfavourable conditions and the plasmodium
differentiates and forms fruiting bodies bearing spores at their tips during favourable conditions. |
41. Study the given figure and select the correct statements:
I: |
In over 60 per cent of angiosperms, pollen grains are shed at this 2-celled stage. |
II: |
In 40 per cent of angiosperms, the generative cell divides mitotically to give rise to the two male gametes before pollen grains are shed (3-celled stage). |
1. Only
I
2. Only
II
3. Both
I and
II
4. Neither
I nor
II
42. NADH + H+ is reoxidised to NAD+ in:
I: Ethanol fermentation
II: Lactate fermentation
1. Only I
2. Only II
3. Both I and II
4. Neither I nor II
43. Match each item in Column I with one in Column II and select the correct match from the codes given:
|
Column I |
|
Column II |
A |
Number of possible phenotypes in ABO blood group system |
P |
1 : 2 : 1 |
B |
Number of possible genotypes in ABO blood group system |
Q |
3 : 1 |
C |
F2 phenotypic ratio in incomplete dominance |
R |
4 |
D |
F2 phenotypic ratio in complete dominance |
S |
6 |
Codes:
|
A |
B |
C |
D |
1. |
P |
Q |
R |
S |
2. |
Q |
R |
S |
P |
3. |
R |
S |
P |
Q |
4. |
S |
P |
Q |
R |
44. Each taxonomic group/category:
I. |
is merely a morphological aggregate |
II. |
is a distinct biological entity |
III. |
represents a rank |
1. Only
II is correct
2. Only
II and
III are correct
3.
I,
II and
III are correct
4. Only
III is correct
45. Who popularised the term ‘Biodiversity’ to describe the combined diversity at all levels of biological organisation?
1. | Robert May | 2. | Paul Ehrlich |
3. | Edward Wilson | 4. | Alexander von Humboldt |
46. Consider the given two statements:
Assertion: Plant growth is intimately linked to the water status of the plant while development is not.
Reason: The plant cells grow in size by cell enlargement which in turn requires water.
1. Both Assertion and Reason are true and Reason correctly explains the Assertion.
2 Both Assertion and Reason are true but Reason does not correctly explain the Assertion.
3. Assertion is true; Reason is false.
4. Assertion is false; Reason is true.
47. Consider the two statements:
Assertion (A): |
Iodine-KI reagent can be used to detect starch in a sample. |
Reason (R): |
Starch can hold iodine molecules in its helical portion and starch-iodine is blue in colour. |
1. |
Both (A) and (R) are True but (R) does not correctly explain(A). |
2. |
(A) is True but (R) is False. |
3. |
Both (A) and (R) are False. |
4. |
Both (A) and (R) are True and (R) correctly explains (A). |
48. Consider the given two statements:
Statement I: |
In aerobic cellular respiration, the complete oxidation of pyruvate takes place in the cytoplasm. |
Statement II: |
The apparatus for passing electrons to molecular oxygen with simultaneous synthesis of ATP is located in the inter-membrane space |
1. |
Statement I is incorrect; Statement II is incorrect |
2. |
Statement I is incorrect; Statement II is correct |
3. |
Statement I is correct; Statement II is incorrect |
4. |
Statement I is correct; Statement II is correct |
49. Consider the two statements:
Assertion (A): |
The ‘Sixth Extinction’ presently in progress is different from the previous episodes of species extinction. |
Reason (R): |
The current species extinction rates are estimated to be 100 to 1,000 times faster than in the pre-human times |
1. |
Both (A) and (R) are True and (R) correctly explains (A). |
2. |
Both (A) and (R) are True but (R) does not correctly explain (A). |
3. |
(A) is False but (R) is True. |
4. |
(A) is True but (R) is False. |
50. How many of the given statements are correct:
I: |
Endosperm development precedes embryo development. |
II: |
The coconut water from tender coconut is cellular endosperm. |
III: |
The white kernel in coconut is free nuclear endosperm. |
IV: |
Endosperm is completely consumed by the developing embryo in pea. |
V: |
Endosperm persists in the mature seed of castor. |
1. 2
2. 3
3. 4
4. 5
Biology II - Section A
51. Regarding early embryonic development in humans:
I: |
The first movements of the foetus and appearance of hair on the head are usually observed during the third month. |
II: |
By the end of about 24 weeks, the body is covered with fine hair, eye-lids separate, and eyelashes are formed. |
1. Only
I is correct
2. Only
II is correct
3. Both
I and
II are correct
4. Both
I and
II are incorrect
52. Match each item in Column I with one in Column II and select the correct match from the codes given:
|
Column I |
|
Column II |
A |
Radula |
P |
Osteichthyes |
B |
Operculum |
Q |
Molluska |
C |
Flame cell |
R |
Flat worms |
D |
Hair |
S |
Mammalia |
Codes:
|
A |
B |
C |
D |
1. |
P |
S |
Q |
R |
2. |
Q |
P |
R |
S |
3. |
Q |
R |
P |
S |
4. |
R |
Q |
S |
P |
53. Notochord is a:
1. |
endodermally derived rod-like structure formed on the dorsal side during
embryonic development in some animals. |
2. |
endodermally derived rod-like structure formed on the ventral
side during embryonic development in some animals. |
3. |
mesodermally derived rod-like structure formed on the dorsal
side during embryonic development in some animals. |
4. |
mesodermally derived rod-like structure formed on the ventral
side during embryonic development in some animals. |
54. If two genes are closely linked on the same chromosome:
1. |
they will assort independently |
2. |
the proportion of recombinants formed will be higher than the parental types |
3. |
the proportion of recombinants formed will be much lower than the parental types |
4. |
the proportion of recombinants formed will be equal to that of the parental types |
55. The part of the nephron that reabsorbs electrolytes but does not reabsorb any water is:
1. |
Descending limb of loop of Henle |
2. |
Ascending limb of loop of Henle |
3. |
PCT |
4. |
DCT |
56. What type of neuron is found in the human retina and olfactory membrane?
1. Unipolar
2. Bipolar
3. Multipolar
4. Pseudo-unipolar
57. Restriction enzymes produced by some bacteria:
1. |
cleave phosphodiester bond in the main chromosomal DNA of the bacterium. |
2. |
cut single stranded DNA at random positions. |
3. |
prevent the multiplication of bacteriophage in bacteria. |
4. |
provide resistance against antibiotics. |
58. What restores the resting potential of the membrane at the site of excitation?
1. Influx of sodium ions
2. Influx of potassium ions
3. Efflux of sodium ions
4. Efflux of potassium ions
59. Identify incorrect statement regarding
Periplaneta americana:
1. |
Gizzard helps in grinding the food particles. |
2. |
Blood vascular system is of closed type. |
3. |
Excretion is performed by Malpighian tubules. |
4. |
The sperms are stored in the seminal vesicles. |
60. In the five kingdom classification, the members of Kingdom Animalia:
I: |
are all heterotrophs |
II: |
are all multicellular where cells lack a cell wall |
1. Only I is correct
2. Only II is correct
3. Both I and II are correct
4. Both I and II are incorrect
61. Which of the following biomolecules makes up maximum percentage of the average composition of a cell?
1. Carbohydrates
2. Proteins
3. Lipids
4. Nucleic acids
62. Intercalated discs are found in:
1. Cuboidal epithelium
2. Smooth muscles
3. Cardiac muscles
4. Sarcolemma
63. Which of the following organism is not uricotelic?
1. Land snails
2. Reptiles
3. Insects
4. Aquatic amphibians
64. Lysosomes:
Statement I: |
are membrane bound vesicular structures formed in the rough endoplasmic reticulum. |
Statement II: |
are very rich in almost all types of hydrolytic enzymes optimally active at the basic pH. |
1. |
Statement I is incorrect; Statement II is incorrect |
2. |
Statement I is incorrect; Statement II is correct |
3. |
Statement I is correct; Statement II is incorrect |
4. |
Statement I is correct; Statement II is correct |
65. Opportunistic infections like tuberculosis and toxoplasmosis are seen in HIV positive patients when:
1. |
The B – lymphocyte counts becomes excessive |
2. |
The phagocytic cells stop functioning |
3. |
The T helper cell count gets very low |
4. |
The body starts making a large number of antibodies against HIV |
66. Second messengers, employed in the action on target cells in case of some hormones, include all the following except:
1. cAMP
2. Calcium
3. IP3
4. Catabolite Activator Protein
67. In a transcription unit, the location of promoter is described as:
1. |
at the 3' end, downstream of the structural gene |
2. |
at the 3' end, upstream of the structural gene |
3. |
at the 5' end, upstream of the structural gene |
4. |
at the 5' end, downstream of the structural gene |
68. In the 24 hour average duration of cell cycle of a human cell, cell division properly lasts for:
1. only about 1 hour
2. approximately 90 minutes
3. between 4 and 5 hours
4. 95% time of the cell cycle
69. Match each item in Column I with one in Column II and select the correct match from the codes given:
|
Column I |
|
Column II |
A |
Gliding joint |
P |
Base of thumb |
B |
Saddle joint |
Q |
Between atlas and axis |
C |
Pivot joint |
R |
Suture in skull |
D |
Fibrous joint |
S |
Between carpal bones |
Codes:
|
A |
B |
C |
D |
1. |
P |
Q |
R |
S |
2. |
Q |
R |
S |
P |
3. |
R |
S |
P |
Q |
4. |
S |
P |
Q |
R |
70. Potassium ions:
I: |
are filtered at the glomerulus |
II: |
are reabsorbed at the PCT |
III: |
are secreted at DCT |
Correct statements are:
1. I & II only
2. I & III only
3. II & III only
4. I, II & III
71. In a healthy adult human being, on an average:
1. |
about 25 – 30 mg of urea is excreted out per day |
2. |
125 ml per minute urine is produced |
3. |
about 200 L carbon dioxide is removed by the lungs per minute |
4. |
1100-1200 ml of blood is filtered by the kidneys per minute |
72. The most abundant and the least abundant of the total WBCs, respectively are:
1. Neutrophils and Monocytes
2. Eosinophils and Basophils
3. Neutrophils and Basophils
4. Monocytes and Eosinophils
73. GIFT is:
1. |
Transfer of an ovum collected from a donor into the fallopian tube of another
female who cannot produce one, but can provide suitable environment for
fertilisation and further development. |
2. |
Fertilisation outside the body in almost similar conditions as those in the body. |
3. |
Transfer of the zygote or early embryos (with up to 8 blastomeres) into the fallopian tube. |
4. |
Artificial introduction of the semen collected either from the husband or a
healthy donor into the vagina or into the uterus (IUI – intra-uterine insemination) of the female. |
74. Consider the two statements:
Assertion (A): |
Adrenal medullary hormones can increase the cardiac output. |
Reason (R): |
Adrenal medullary hormones are steroids with prominent effects on osmoregaltuion and glucose homeostasis in human body. |
1. |
Both (A) and (R) are True and (R) correctly explains (A). |
2. |
(A) is True but (R) is False. |
3. |
Both (A) and (R) are True but (R) does not correctly explain (A). |
4. |
(A) is False but (R) is True. |
75. The cell shown in the figure is used in:
1. |
capturing prey in Cnidarians |
2. |
generating water current in sponges |
3. |
osmoregulation in rotifers |
4. |
movement in ctenophores |
76. The fungal Genus not responsible for causing ringworm in humans will be:
1. Microsporum
2. Trichophyton
3. Epidermophyton
4. Trichoderma
77. Embryological support for evolution was proposed by:
1. Ernst Mayr
2. Ernst Haeckel
3. Hugo de Vries
4. Kary Mullis
78. Which of the following methods is especially useful for transforming animal cells?
1. Electroporation
2. Biolistics
3. Microinjection
4. Heat shock
79. Which hormone, secreted by the small intestinal mucosa in response to fatty chyme, causes contraction of the gall bladder?
1. Secretin
2. Cholecystokinin
3. Gastric inhibitory peptide
4. Gastrin
80. The maximum volume of air a person can breathe out after a forced inspiration is called as:
1. Functional residual capacity
2. Vital capacity
3. Expiratory reserve volume
4. Residual volume
81. Which of the following has an ATPase activity?
1. Myosin head
2. Myosin tail
3. Troponin T
4. Tropomyosin
82. Root knot disease in tobacco is caused by:
1. Infective double stranded RNA
2. Abnormally folded proteins
3. Nematode Meloidogyne incognita
4. Nematode Caenorhabditis elegans
83. In the absence of an enzyme, the catalysed reaction:
1. |
does not take place |
2. |
takes place at a very slow rate |
3. |
takes place at a higher rate |
4. |
is not affected at all |
84. The first form of milk produced by the mammary glands of humans immediately following delivery of the newborn is rich in:
1. IgA antibodies
2. IgG antibodies
3. IgM antibodies
4. IgE antibodies
85. Consider the given two statements:
Statement I: |
The broadly utilitarian argument for conserving biodiversity says that humans derive countless direct economic benefits from nature. |
Statement II: |
The ethical argument for conserving biodiversity says that biodiversity plays a major role in many ecosystem services that nature provides. |
1. |
Statement I is correct; Statement II is incorrect |
2. |
Statement I is incorrect; Statement II is incorrect |
3. |
Statement I is incorrect; Statement II is correct |
4. |
Statement I is correct; Statement II is correct |
Biology II - Section B
86. Consider the given two statements:
Statement I: |
More than 25% of the drugs currently sold in the market worldwide are derived from plants. |
Statement II: |
Amazon forest is estimated to produce, through photosynthesis 5 % of the total oxygen in the earth’s atmosphere. |
1. |
Statement I is incorrect; Statement II is incorrect |
2. |
Statement I is incorrect; Statement II is correct |
3. |
Statement I is correct; Statement II is incorrect |
4. |
Statement I is correct; Statement II is correct |
87. The ribozyme that catalyses peptide bond formation in prokaryotes is a part of:
1. |
the larger subunit of the bacterial ribosome |
2. |
the smaller subunit of the bacterial ribosome |
3. |
the 5’ UTR of the mRNA |
4. |
the 3’ UTR of the mRNA |
88. If the % weight of elements in Earth’s crust and human body are compared, all the following will have a higher % composition in human body except:
1. Carbon
2. Oxygen
3. Nitrogen
4. Calcium
89. In which flower stamens are syngenesious i.e., anthers are fused and filaments are free from each other is observed?
1. Ray florets of sunflower
2. Hibiscus rosa-sinensis
3. Disc florets of sunflower
4. Neutral florets of sunflower
90. Cryptic colouration is:
1. |
warning colouration by poisonous organisms. |
2. |
protective resemblance with the environment. |
3. |
lack of effect of exposure of sunlight on skin colour. |
4. |
contrasting skin colours in males and females of a species. |
91. What would not be true for cyclostomes?
1. |
All are endoparasites on some fishes. |
2. |
They have aa circular mouth without jaw. |
3. |
Body is devoid of scales and paired fins. |
4. |
Circulation is of closed type. |
92. The trait, shown by solid symbols in the given pedigree, is MOST LIKELY inherited as:
1. Autosomal recessive trait
2. Sex linked recessive trait
3. Autosomal dominant trait
4. Sex linked dominant trait
93. The Medical Termination of Pregnancy (Amendment) Act, 2017, enacted by the government of India provides:
I: |
A pregnancy may be terminated on certain considered grounds within the first 12 weeks of pregnancy on the opinion of one registered medical practitioner. |
II: |
If the pregnancy has lasted more than 12 weeks, but fewer than 24 weeks, two registered medical practitioners must be of the opinion, formed in good faith, that the required ground exist. |
1. Only
I
2. Only
II
3. Both
I and
II
4. Neither
I nor
II
94. Consider the two statements:
Assertion(A): |
Periodic abstinence is the method of natural contraception in which the couples avoid or abstain from coitus from day 10 to 17 of the menstrual cycle. |
Reason(R): |
Implantation is expected to take place from day 10 to 17 of the menstrual cycle. |
1. |
Both (A) and (R) are True but (R) does not correctly explain (A). |
2. |
(A) is True but (R) is False. |
3. |
Both (A) and (R) are False. |
4. |
Both (A) and (R) are True and (R) correctly explains (A). |
95. Chorionic villi are derived from:
1. Trophoblast cells
2. Granulosa cells
3. Theca cells
4. Maternal tissue
96. Cells sloughed from malignant tumors reach distant sites through blood, and wherever they get lodged in the body, they start a new tumor there. This property is called:
1. Oncogenic transformation
2. Contact inhibition
3. Metastasis
4. Metaplasia
97. How many of the given statements are correct?
I: |
The major lipids in cell membrane are phospholipids that are arranged in a bilayer. |
II: |
The ability of lipids and carbohydrates to move laterally within the membrane is measured by its fluidity. |
III: |
In addition to phospholipids, the animal cell membrane also contains cholesterol. |
IV: |
Algae have a cell wall, made of cellulose, galactans, mannans, and minerals like calcium carbonate. |
V: |
In plants other than algae, cell membrane consists of cellulose, hemicellulose, pectins and proteins |
1. 2
2. 3
3. 4
4. 5
98. In animal cells, during the S phase:
I: |
DNA replication begins in the cytoplasm |
II: |
The centriole duplicates in the nucleus |
1. Only I is correct
2. Only II is correct
3. Both I and II are correct
4. Both I and II are incorrect
99. Consider the two statements:
Assertion (A): |
An excess of aldosterone can cause a decrease in potassium ion concentration in body fluids. |
Reason (R): |
Aldosterone acts mainly at the renal tubules and stimulates the reabsorption of Na+ and water. |
1. |
Both (A) and (R) are True but (R) does not correctly explain (A). |
2. |
(A) is True but (R) is False. |
3. |
Both (A) and (R) are False. |
4. |
Both (A) and (R) are True and (R) correctly explains (A). |
100. A process in which heritable variations enabling better survival are enabled to reproduce and leave greater number of progeny is called:
1. Evolution
2. Saltation
3. Speciation
4. Natural selection
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