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P.T.O.
MAR IVANIOS COLLEGE (AUTONOMOUS)
THIRUVANANTHAPURAM
Reg. No. :.………………… Name :.…………………
Third Semester Career Related B.Sc. Degree Examination, November 2017
First Degree Programme under CBCSS Core Course IV: (for Botany and Biotechnology)
AUBB342: Environmental Studies and Phytogeography
Time: 3 Hours Max. Marks 80
SECTION A
Answer ALL the following each in a word or as short notes.
1. Halophytes
2. Food web
3. Hot spots
4. Estuaries
5. Thermal Pollution
6. Pyramid of numbers
7. Endemic species
8. Ecological Niche
9. Eutrophication
10. Acid Rain
(10 1 10 Marks)
SECTION B
Answer any EIGHT questions, not exceeding one paragraph.
11. Write note on ecological indicators.
12. Mangrove vegetation of Kerala.
13. Waste land reclamation.
14. Causes of landslides and disaster management during land slides.
15. Adaptations of xerophytes.
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16. Explain the significance of social forestry.
17. Differentiate between renewable and non renewable resources with appropriate examples.
18. National parks and wild life sanctuaries.
19. IPR.
20. What is ozone What are the problems related to ozone layer depletion
21. Anatomical adaptations of hydrophytes.
22. Grassland ecosystem.
2 16 Marks)
SECTION C
Short essay type Answer any SIX questions.
23. "India is a mega diversity nation". Justify the statement.
24. Describe the growing energy needs and explain the need for alternate sources of energy.
25. Briefly explain the factors leading to greenhouse effect. Add a note on its control.
26. How does human activities impact soil erosion and desertification
27. What are the different mechanisms of solid waste management
28. Describe various types of Ecological succession.
29. Explain the causes, effects and control measures of air pollution.
30. How does energy flow in an ecosystem Explain with suitable examples.
31. Briefly describe the different Environment Protection Act.
4 24 Marks)
SECTION D
Long essay type Answer any TWO questions.
32. Write an essay on aquatic ecosystems. Add a note on the plant succession in a pond.
33. Give a detailed account of the various phytogeographical regions of India with special emphasis on the vegetational types of India.
34. Describe various types of ecological pyramids with suitable examples.
35. What do you mean by population explosion Explain in detail the problems created by this and the various Family welfare programmes that can be adopted.
15 30 Marks)