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Posted Date: 18 Oct 2009 Posted By: Manish Jain Member Level: Diamond
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2006 Madras University B.Sc Botany Aos : Hydrobiology Question paper
Paper XV - AOS: HYDROBIOLOGY
Time 3 Hrs.
Maximum 100 Marks
Draw Diagrams wherever necessary
Section - A [10 x 3 = Marks 30]
Answer any 10 question each answer should not exceed 50 words:
1. Limnology
2. Non symbiotic nitrogen fixation
3. BOD
4. Eutrophic lake
5. Oxidation pond
6. indicator algae
7. Saprobion index
8. Nitrification
9. Heavy metal
10. Food chain
11. Sedimentation
12. phytoplankton
Section - B [5 x 6 = Marks 30]
Answer any 5 Questions:
All questions carry equal marks each answer should not exceed 200 words:
13. Describe the different types of lakes
14. Explain the salient features of phytoplankton
15. How is water polluted due to eutrophication?
16. Describe the biodegradable pollutants
17. Discuss briefly the salient features of phytobenthon
18. How do Algae play the role of pollution indicator
19. Describe the physical and chemical features of a river ecosystem
Section - C [4 x 10 = Marks 40]
Answer any 4 Questions:
All questions carry equal marks each answer should not exceed SOti words:
20. Explain the flora and fauna of a fresh water pond
21. How is water polluted due to eutrophication.
22. Explain the kind of productivity mentioned in the chapters that influence the productivity
23. Give an account of inter relationship of algae, fungi, bacteria in the water environment
24. Discuss the physical and chemical features of a lake
25. Explain the biotic and abiotic component of a fresh water ecosystem
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