M.Sc. DEGREE EXAMINATION, NOVEMBER 2017
First Semester
Oceanography
MARINE ECOLOGY AND ZOOGEOGRAPHY
(CBCS 2016 onwards)
Time 3 Hours Maximum 75 Marks
Part A (10 x 2 20)
Answer all questions.
1. Endemism.
2. Hydrothermal vent.
3. Food-web.
4. Ecological pyramid.
5. Sex ratio.
6. Carrying capacity.
7. Ecological niche.
8. Foulers.
9. Alien species.
10. Invasion
Sub. Code
461701
RW-904
2
WK16
Part B x 5 25)
Answer all questions choosing either or
11. Describe the adaptations of plankton.
Or
Discuss the importance of coral reef.
12. Briefly explain the food chains of marine ecosystem.
Or
Describe the recycling of nutrients in the marine
environment.
13. Write short notes on population growth and its
pattern.
Or
Discuss the role of prey-predator relationship in a
population.
14. Explain the edge effect with suitable examples.
Or
Write brief account on marine fouling and boring
community.
15. Discuss the biodiversity assessment techniques.
Or
Write notes on physical alteration and their impacts
on biodiversity.
RW-904
3
WK16
Part C x 10 30)
Answer any three questions.
Each questions carry equal marks.
16. Write an essay on the importance, conservation and
management of mangrove and ecosystem.
17. Write a detailed account on systems ecology and
modeling in marine ecosystem.
18. Give an account on population density and explain the
role of density dependant and independent factors.
19. Explain the concept of animal association in the sea with
suitable examples.
20. Write a detailed account on threats to marine biodiversity
with respect to pollution.
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