LOYOLA COLLEGE (AUTONOMOUS), CHENNAI – 600 034

M.Sc. DEGREE EXAMINATION – ZOOLOGY

TS 28

THIRD SEMESTER – APRIL 2006

                                                  ZO 3801 – ENVIRONMENTAL BIOLOGY

 

 

Date & Time : 29-04-2006/1.00-4.00 P.M.   Dept. No.                                                       Max. : 100 Marks

 

 

Part A                                     (Answer All)                          10 ´ 2 = 20

1. What are pheromones?
2. Comment on carbon trading and global warming.
3. What are ecological indicators?
4. Define exobiology.
5. Differentiate fertility from fecundity.
6. Explain potential mortality and realized mortality.
7. Comment on carrying capacity.
8. What are edaphic factors?
9. Differentiate home range from territory.
10. With suitable example explain symbiosis.

Part B                                     (Answer any four)                 4 ´ 10 = 40

11. Write notes on forest resources.
12. Explain intraspecific animal association.
13. Highlight hydrologic cycle.
14. Plan out a protocol for cryopreservation and mention its merits and demerits.
15. What are biogeochemical cycles? Explain with carbon cycle.
16. Discuss briefly biofertilizers and biopesticides.

 

Part C                                     (Answer any two)                              2 ´ 20 = 40

17. Write in essay on Wildlife conservation.
18. Describe ecological energetics.
19. Discuss in detail interspecific animal association.
20. Write notes on (1) Energy pyramids     (2) Population dispersion

 

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