WEST BENGAL CIVIL SERVICE
EXAMINATION - 2007
Zoology Paper-I
Time Allowed-3 Hours Full Marks-100
Group - A
(Answer any three questions.)
1. Mention the characters of Phylum Nemathelminthes। Describe the Life-history of Wuchereria bancrofti. 5+15
2. Discuss the affinities of peripatus with Annelida and Arthropoda. Comment on its systematic position. 8+8+4
3. Discuss the statement - "Birds are glorified reptiles"। 20
4. Make a comparison in tabular from between cartilagenous and Bony fishes. Write on the functions of swim-bladder. 14+6
5. Write short notes on any four of the following :-
(a) Appendage
(b) Components of circulatory system
(c) Corals
(d) Importance of Neopelina
(e) Retrogressive metamorphosis
(f) External morphology of Monotremata. 5x4
Group—B
Answer any two questions.
6. What is culture fishery ? Outline the process of pisciculture under inland fishery. Discuss the methods of induced breeding. 2+4+14
7. Define Ecosystem. Discuss the nature of energy flow in ecosystem. What is solar flux ? 4+12+4
8. Write on the two major groups of animal behaviour. Write on the methods of studying animal behaviour. 10+10
9. Write notes on any four of the following :-
(a) Secondary pollutants
(b) Ganga Action Plan
(c) Variables in Biology
(d) Global warming
(e) Attributes of organised societies
(f) Algal bloom. 5x4
***
