M.Sc. DEGREE EXAMINATION, APRIL 2016
Oceanography and Coastal Area Studies
BIOLOGICAL OCEANOGRAPHY
(CBCS 2014 onwards)
Time 3 Hours Maximum 75 Marks
Part A (10 2 20)
Answer all questions.
All questions carry equal marks.
1. Red tide
2. Standing stock
3. Secondary productivity
4. Copepod
5. Intertidal zone
6. Differentiate seaweed and sea grass
7. Metamerism
8. Chaetognatha
9. Commensalism
10. Symbiosis.
Sub. Code
461103
RW-10940
2
Ws15
Part B 5 25)
Answer all questions by choosing either or
11. Explain harmful algal bloom.
Or
Describe the status of marine primary productivity
in east and west coasts of India.
12. Elaborate the methods used for estimation of
secondary production and add note on the factors
affecting it.
Or
Write notes on the interrelationship between
zooplankton and fishery resources.
13. Describe the distribution and role of seaweeds in
marine ecosystem.
Or
Give an account on the special features of
mangroves.
14. What are the basic difference between vertebrates
and invertebrates?
Or
Write notes on Pogonophora and Prochortdata with
a suitable example.
15. Explain Endoceism and Epizoism with examples.
Or
Comment on the following with an example
Inquilinism.
Phoresis.
RW-10940
3
Ws15
Part C 10 30)
Answer any three questions.
16. Explain the methods used for estimation of standing
stock and biomass and also the factors affecting it.
17. How zooplankton plays a role in marine food chain and
food web?
18. Describe the ecological role of mangrove ecosystem.
19. Explain the various environmental factors which
determine the distribution of marine invertebrates.
20. Write an essay on the following animal association modes
with illustrations
Hermit crab and sea anemone
Corals and Zooxanthallae.