N A L A N D A O P E N U N I V E R S I T Y
M.Sc. Botany, Part-II
PAPER-XII
(Environmental Biology)
Annual Examination, 2018
Time 3 Hours. Full Marks 80
Answer any Five Questions. All questions carry equal marks.
1. What do you understand by the term pollution Give an account of water or Air pollution.
Mention its remedy.
2. What is an Ecosystem Give an account of Forest or Pond ecosystem.
3. What do you understand by the term sustainable development Discuss various strategies
formulated for sustainable development.
4. What are the steps taken at Global level to Conserve biodiversity. Give an account.
5. What do you understand by the term biogeochemical cycle. Give an account of carbon or
nitrogen cycle.
6. Explain, how human activities have caused major threat to biodiversity. Explain in a
systematic manner.
7. What do you understand by the term productivity in an ecosystem Describe various types
of productivity of ecosystem.
8. Describe different vegetational belts of India.
9. Write short notes on any Two of the following
Ecological pyramid Noise pollution
Threatened categories of Plants Endemism.
10. Write short notes on any Two of the following
Green house effect Acid rain
Ozone depletion Kinds of natural disaster