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-I
PAPER-I
(Biodiversity of Plant and Diversity of Algae)
Annual Examination, 2016
Time 3 Hours. Full Marks 80
Answer Five Questions in all, selecting at least Two Questions from each group.
All questions carry equal marks.
GROUP
1. Mention few major factors for the decline of Biodiversity.
2. What are the important attributes made at global level to conserve Biodiversity
3. Describe ecosystems. Give in detail various component of an ecosystem citing suitable example.
4. Explain the following
Status of protection of Biodiversity in India.
Major Causes of Extinction of various Animal species.
5. Write short notes on any Two of the following:
Nitogen Cycle Carbon Cycle
Pyramid of Biomass Calculation of Productivity in an Ecosystem
Corbet National Park, Uttrakhand
GROUP
6. Giving suitable diagram, describe ultra structure of a Cyanophycean cell. In what respect it
differs from a green cell.
7. How different groups of Algae classified on the basis of Pigments they contain. What are their
types
8. What is Isomorphic Alternation of generation Explain in context to life cycle of
Ectocarpus.
9. Describe mode of sexual reproduction in any member of Chlorophyceae studied by you. Also
give suitable diagram to justify your answer.
10. Write short notes on any Two of the following.
Role of Nostoc as Nitrogen fixer Source of Agar-Agar
Aplanospores Macrandrous species of Oedogonium
Algae as food.