Statement I : Pollen grains of many species cause chronic respiratory disorders. Statement II : Generative cell is bigger than vegetative cell and has abundant food reserve. Choose the correct answer from the options given below.
a.
Both statement I and statement II are correct
b.
Statement I is correct and Statement II is wrong
c.
Statement I is wrong and Statement II is correct
d.
Both Statement I and Statement II are wrong
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Q2mcq1 mark
Name the process by which spermatids are transformed into spermatozoa.
a.
Spermiation
b.
Spermatogenesis
c.
Spermiogenesis
d.
Ovulation
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Q3mcq1 mark
Oral contraceptive pills mainly contain
a.
Progestogen and LH
b.
Progestogen, Estrogen and LH
c.
Progestogen, HCG and Estrogen
d.
Progestogen and Estrogen
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Q4mcq1 mark
XO type of sex determination is observed in
a.
Birds
b.
Grasshopper
c.
Drosophila
d.
Honey bees
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Q5mcq1 mark
If a double stranded DNA has 30 percent Thymine, then calculate the percentage of Guanine in the DNA.
a.
20%
b.
30%
c.
60%
d.
70%
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Q6mcq1 mark
Identify the following in the order of evolution.
a.
Neanderthal → Homo habilis → Homo erectus → Homo sapiens
b.
Homo habilis → Neanderthal → Homo erectus → Homo sapiens
c.
Homo habilis → Homo erectus → Neanderthal → Homo sapiens
d.
Neanderthal → Homo erectus → Homo habilis → Homo sapiens
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Q7mcq1 mark
Which of the following cells actively participate during allergy?
a.
RBC
b.
B – Lymphocytes
c.
T – Lymphocytes
d.
Mast cells
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Q8mcq1 mark
Identify the disease when lips and finger nails may turn gray to bluish in colour in severe cases.
a.
Malaria
b.
Pneumonia
c.
Hepatitis – B
d.
AIDS
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Q9mcq1 mark
The nutritional quality of curd is improved by which vitamin?
a.
B12
b.
B2
c.
B6
d.
B1
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Q10mcq1 mark
The majority of Baculoviruses used as biological control agents are rich in the genus
a.
Nucleopoly hedro virus
b.
Retro virus
c.
DNA virus
d.
Bacterio phage
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With regard to foetus in human beings, some of the following events take place during the development. (i) Develops limbs and digits (ii) Major organ systems are formed (iii) Eye lids separate and eyelashes are formed. (iv) Heart is formed. Choose the correct option among the following which shows the correct sequence of development:
a.
i, ii, iii & iv
b.
i, iii, iv & ii
c.
ii, iii, iv & i
d.
iv, i, ii & iii
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(a) Justify the following statements:
(i) Flippers of Penguins and Dolphins are the results of convergent evolution.
(ii) Thorns of Bougainvillea and tendrils of Cucurbita are the result of divergent evolution.
(b) State Hardy-Weinburg principle.
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(a) Some angiospermic plants pollinate only with the help of wind, why?
(b) Why apple is called false fruit? Which part of the apple flower forms the fruit?
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In the context to Lac operon, when Jacob and Monod cultured E. Coli in a media devoid of Lactose, E. Coli cells formed the colonies and when Lactose was added, the E. Coli cells metabolized lactose by synthesizing enzymes. Explain how Lac operon switches off and switches on.
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(a) With respect to tissue culture, define the following terms: (i) Micropropagation (ii) Somaclones (iii) Somatic hybridization
(b) What is Biopiracy?
(c) Expand GEAC with regard to Biotechnology research.
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Name the type of species interactions seen in each of the following example:
(a) Marine fish and copepods
(b) Balanus and chathamalus
(c) Fig tree and wasp
(d) The cattle egrets and grazing cattle
(e) Ophrys orchid and Honey bees
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