N A L A N D A O P E N U N I V E R S I T Y
M.Sc. Zoology, Part-II
PAPER-XIII
(Developmental Biology)
Annual Examination, 2017
Time: 3 Hours. Full Marks: 80
Answer five questions in all, selecting at least Two Questions from each Group.
All Questions carry equal marks.
GROUP
1. Describe the process of spermatogenesis and add a note on the structure of a mammalian
sperm.
2. Describe the mechanism of ovum transport in mammal.
3. What is fertilization Describe the mechanism of fertilization.
4. Describe the cleavage, blastrulation and gastrulation in vertebrates.
5. Write notes on any Two of the following:—
Ovulation
Graffian follicles
Semination
Vitellogenesis
GROUP
6. Give an account of role of thyroxine in amphibian metamorphosis.
7. Describe the role of Juvenile hormone and Ecdysone in insect metamorphosis.
8. Describe the method of bone marrow transplantation.
9. Describe the significance of totipotency and pluripotency of cell during animal development.
10. Write notes on any Two of the following:—
Stem cell
External fertilization
Yolk placenta
Ecological metamorphosis