M.Sc. DEGREE EXAMINATION, NOVEMBER 2017.
Third Semester
Botany
ECOLOGY, BIOGEOGRAPHY AND CONSERVATION
BIOLOGY
(CBCS 2011 onwards)
Time 3 Hours Maximum 75 Marks
Part A (10 x 2 20)
Answer all questions.
1. Commensalism.
2. Ecological nitch.
3. Grazing food chain.
4. Food web.
5. Biomagnification.
6. Acid rain.
7. Red data book.
8. GIS.
9. Sacred Groves.
10. Cryopreservation.
Sub. Code
1MBO3C1
AFC-10547
2
Ws20
Part B x 5 25)
Answer all questions, choosing either or
11. What is the scope and objective of Ecology?
Or
Describe briefly the characteristics of a community.
12. Explain the concept of ecological pyramid.
Or
Explain the functioning of hydrological cycle.
13. What is Air Pollution? Describe the sources and
effects of Air Pollution.
Or
Describe the process that causes ozone depletion.
14. Give an account on age and area hypothesis.
Or
Explain the principles of phytogeography and
confidental drift hypothesis.
15. Explain the social approaches in conservation of
forest.
Or
Write short notes on chipko movement.
AFC-10547
3
Ws20
Part C x 10 30)
Answer any three questions.
16. Describe any two methods of studying plant community.
17. Discuss the structure and functions of grassland and
desert ecosystem.
18. Explain the effect of dams on forest and tribal people.
19. Define remote sensing. Discuss the remote sensing
application for environment protection.
20. What is endemism and discuss the endemic Flora and
Fauna and their conservation strategies in India?
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