Q. Answer in one sentences:
Name the enzyme by which the HIV genome replicates in the host cell.

Q. Answer in 200 to 250 words:
What is infertility? How is infertility treated by assisted reproductive technologies like GIFT and ICSI?

Q. Answer in 40 to 80 words:
What is ecological succession? Distinguish primary succession from secondary succession.

Q. What is inbreeding depression? How is it controlled?

Q. Answer in one sentences:
Define reforestation.

Q. Answer in one sentences:
What is Menarche?

Q. Answer in one sentences:
Mention the use of statin.

Q. Answer in 3 to 5 sentences:
Define biodiversity. Write any two types of biodiversity.

Q. Answer in 40 to 80 words:
Mention any three characteristics of cancer cell.

Q. Answer in 40 to 80 words:
With reference to ecological succession define the following terms:
i) Climax community
ii) Sere(s)
iii) Pioneer species.

Q. Answer in one sentences:
Name the disease diagnosed by Widal test.

Q. Answer in 200 to 250 words:
Explain the process of translation in protein synthesis.

Q. Answer in 3 to 5 sentences:
Differentiate seasonal breeders from continuous breeders.

Q. Answer in one sentences:
Ovulation takes place on the 14th day of menstrual cycle. Why?

Q. Answer in 3 to 5 sentences:
Draw a neat labelled diagram of a typical agarose gel electrophoresis.

Q. Draw a neat labeled diagram of an antibody molecule and explain the structure of the antibody.

Q. Answer in 40 to 80 words:
State Hardy-weinberg principle. Mention any two factors that affect Hardy-Weinberg equilibrium.

Q. Answer in one sentences.
What are somaclones?

Q. Answer in 3 to 5 sentences:
Why has T.H. Morgan selected fruit flies for his genetical experiments?

Q. Answer in 40 to 80 words:
Explain in brief the separation and isolation of DNA fragments.

Q. Answer in one sentences:
What is Colostrum?

Q. Answer in 3 to 5 sentences:
Name any four recent extinct organisms as per IUCN Red list.

Q. Answer in one sentences.
How do some species of insects and frogs avoid being detected easily by the predators?

Q. Answer in 40 to 80 words:
What is parthenogenesis? Give two examples.

Q. Answer in one sentences:
Name the molecular scissors used in recombinant DNA (r DNA) technology.

Q. Answer in 200 to 250 words:
Draw a neat labelled diagram of sectional view of human female reproductive system.

Q. Answer in 40 to 80 words:
What is artificial hybridisation? By which technique is it achieved?

Q. Answer in 200 to 250 words:
a) What are multiple alleles? Give an example.
b) Write the symptoms of Klinefelter's syndrome.

Q. Answer in 40 to 80 words:
Write the karyotype of the following syndromes:
i) Down's syndrome
ii) Kinefelter's syndrome
iii) Turner's syndrome

Q. Answer in 200 to 250 words:
Enumerate the salient features of Human Genome Project (HGP).