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Posted Date: 18 Oct 2009      Posted By: Manish Jain      Member Level: Diamond

2006 Madras University B.Sc Botany Aos : Hydrobiology Question paper



Course: B.Sc Botany   University: Madras University




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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