M.Sc-M.Sc Zoology 1st Year : SYSTEMATICS AND ANATOMY OF CHORDATES AND GAMETE BIOLOGY (Acharya Nagarjuna University - Center for Distance Education, Guntur, Andhra Pradesh-2013)

(DZOO 02) NR M.Sc. (Previous) DEGREE EXAMINATION, MAY - 2013 
First Year 
Zoology 
Paper - II : SYSTEMATICS AND ANATOMY OF CHORDATES AND 
GAMETE BIOLOGY 

Time : 03 Hours                                                                            Maximum Marks : 80

 Answer all questions 

1) a) What are chordates? Give an account on general characters of phylum chordates. 
OR 
b) Write short notes on : 
i) Urochordata. 
ii) Cephalochordata. 
2) a) Write an essay on parental care in fishes. 
OR 
b) Write short notes on : 
i) Non-Poisonous snakes. 
ii) General Characters of amphibia. 
3) a) Give an account on flight adaptations in birds. 
OR 
b) Write short notes on : 
i) Archaeopteryx. 
ii) Flightless birds. 
4) a) What are mammals? Give an account on general characters of mammals. 
OR 
b) Write short notes on : 
i) Aquatic adaptations in mammals. 
ii) South Indian mammals. 
5) a) Give an account on physiology and evolution of placenta. 
OR 
b) Write short notes on : 
i) Fertilization. 
ii) Germ layers. 
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