M.Sc. DEGREE EXAMINATION, NOVEMBER 2017
Third Semester
Zoology
ECOLOGY
(CBCS 2014 onwards)
Time 3 Hours Maximum 75 Marks
Part A (10 x 2 20)
Answer all questions.
1. Sigmoid Growth Curve.
2. Mortality.
3. Fundamental Niche.
4. Pyramid of Energy.
5. Nitrosomonas.
6. Gaseous cycles.
7. Limnology.
8. Sargassum.
9. EIA.
10. Greenhouse gases.
Sub. Code
4MZO3C2
AFF-4922
2
Wk 11
Part B x 5 25)
Answer all questions.
11. What are the main factors that affect the growth of
a population?
Or
Explain mutualism giving suitable examples.
12. Write short notes on biotic and abiotic factors in an
ecosystem.
Or
Explain food web in an aquatic ecosystem.
13. Discuss the role of phosphorus cycle in an
ecosystem.
Or
Explain the cycling of organic nutrients in an
ecosystem.
14. Describe the biotic features of terrestrial habitat.
Or
Explain the biological features of coral reefs.
15. Describe the effect of climate change on living
organisms.
Or
Write short notes on germplasm conservation.
AFF-4922
3
Wk 11
Part C x 10 30)
Answer any three questions.
16. What is animal association? Explain the different types of
associations giving examples.
17. Write an essay on the three main types of ecological
pyramids studied in ecology.
18. What are biogeochemical cycles? Explain the importance
of carbon cycle for living organisms.
19. Describe the biotic features of marine and estuarine
habitats.
20. Discuss in detail on the causes, effects and control
measures of air pollution.
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