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LOYOLA COLLEGE (AUTONOMOUS), CHENNAI 600 034
B.Sc. DEGREE EXAMINATION ADVANCED ZOOLOGY AND BIOTECHNOLOGY
THIRD SEMESTER APRIL 2016
AZ 3510 DEVELOPMENTAL BIOLOGY
Date: 02-05-2016 Dept. No. Max. 100 Marks
Time: 09:00-12:00
PART
Answer ALL the questions (10x2= 20)
01. What are primordial germ cells?
02. Define vitellogenesis.
03. What is chemodifferentiation?
04. What are the factors affecting cleavage?
05. Classify morphogenetic movements.
06. Define parthenogenesis with an example.
07. What is regeneration?
08. Define organiser.
09. What is Rh Factor?
10. Comment on metamorphosis.
PART- B. x 10= 40)
Answer any FOUR questions
11. Explain the theories of formation of prefomation and epigenesis.
12. Give an account on the ultra structure and functions if sperm in relation to its mobility.
13. Explain the events during physiology of fertilisation.
14. Describe the structure and functions of placenta of mammals.
15. Explain the fate of germ layers.
16. Explain the procedure for test tube baby.
PART-C x20= 40)
Answer any TWO questions
17. Describe in detail the development of extra embryonic membranes.
18. Give a detailed account on the development of a vertebrate brain.
19. Describe the process of gastrulation in frog.
20. Give an account on the prenatal diagnosis.