LOYOLA COLLEGE (AUTONOMOUS), CHENNAI – 600 034
M.Sc. DEGREE EXAMINATION – ZOOLOGY
FIRST SEMESTER – APRIL 2011
ZO 1816/1810 – ADVANCED DEVELOPMENTAL BIOLOGY
Date : 15-04-2011 Dept. No. Max. : 100 Marks
Time : 9:00 – 12:00
SECTION – A
Answer all the questions. Each question carries two marks (10 X 2 = 20 Marks)
- How the corpus luteum is formed?
- Differentiate syncitiotrophoblast and cytotrophoblast.
- What is fertilization cone?
- Define morphogenesis.
- Write the functions of chorion.
- Comment on fertile aid for men.
- Explain third party reproduction.
- What is zonary placenta?
- Define arrhenotoky.
- What is paedogenesis?
SECTION – B
Answer any FOUR questions. Each question carries ten marks.(4 X 10 = 40 Marks)
- Explain gradient theory germplasm theory.
- Describe the electron microscopic structure of the mature spermatozoan.
- Write notes on Speeman’s primary organiser.
- Explain morphogenetic movements of cells during gastrulation.
- Give an account on the procedure involved in embryo transfer and explain the proper location for placement of the embryo.
- Write an account on extra embryonic membranes of chik.
SECTION – C
Answer any TWO questions. Each question carries twenty marks (2 X 20 = 40 Marks)
- Write an essay on structure, classification and physiology of placenta.
- Give an account on ovulation, hormonal control, sperm transport and implantation of fertilized ovum.
- Explain parthenogenesis and neoteny.
- Write a detailed account on fertility of sperm and in vitro fertilization.