M.Sc. DEGREE EXAMINATION, APRIL 2016
Second Semester
Oceanography
COASTAL ECOSYSTEM
(CBCS 2014 onwards)
Time 3 Hours Maximum 75 Marks
Part A (10 2 20)
Answer all questions.
All questions carry equal marks.
Each answer should be in about 10 words.
1. Ecological Niche.
2. Biogeochemical cycle.
3. Commensalism.
4. Succession.
5. Intertidal zone.
6. Give any four examples of interstitial organisms.
7. Continental Rise.
8. EEZ.
9. Disphotic zone.
10. Bioluminescence.
Sub. Code
461502
RW-10799
2
WS 20
Part B 5 25)
Answer all questions.
All questions carry equal marks.
Each answer should be in about 500 words.
11. Describe the food web in an estuarine environment.
Or
Comment on any five of the ecosystem functions in
the marine environment.
12. Briefly explain the community metabolism.
Or
Comment on symbiosis and parasitism
13. Briefly explain the adaptations of intertidal
organisms.
Or
What are the threats to intertidal communities?
14. What are the adaptations for subtidal communities?
Or
Give the importance of subtidal communities on
fisheries.
15. What food sources are available for animals that
live on the ocean floor?
Or
Briefly explain the adaptations of Deep-Sea
animals.
RW-10799
3
WS 20
Part C 10 30)
Answer any three of the following.
All questions carry equal marks.
Each answer should be in about 1000 words.
16. Describe the nitrogen and phosphorous cycles in the
ocean.
17. Write an essay about animal associations in the marine
ecosystem?
18. Give a detailed account on meiobenthos composition,
ecology, adaptations and their interactions?
19. Comment on
Ecotone.
Territorial sea.
Contiguous zone.
Continental shelf and slope.
Exclusive fishing zone.
20. Give an account on the methods and estimation of
deep-sea benthic communities.