Assam University 2007 B.Sc Botany TDC Part-I Honours --- Second - Question Paper

NTS-07/ BOTH-2 /038

2007
BOTANY (Honours)
Second Paper
(Morphology, Anatomy, Embryology, Polynology, Palaeobotany and Gymnosperm)
TDC Part-I

Full Marks : 70
Pass Marks : 21

Time : three hours

The figure in the margin shows full marks for the ques.

ans 5 questions, selecting 1 from every Unit

UNIT –I

1. Discuss in detail the morphology of carpel. Add a note on carpel polymorphism. 8+6 =14
2. Write a note on various kinds of pollination. elaborate the contrivances of self-pollination? seven + seven = 14

UNIT- II

3. Write short notes on any two: seven x two = 14
(a) Anomalous secondary growth in Nyctanthes
(b) Root-stem transition
(c) Organization of apical meristem of root

4. elaborate the anatomical characters considered in taxonomic study? Write a note on role
of anatomical characters in solving taxonomic issues. Illustrate your ans with
examples. four + 10 = 14

UNIT-III

5. describe polyembryony. How can polyembryony occur in angiosperm? What is the fate of multiple embryos? two + 10 + two = 14

6. Write short notes on any 2 : seven x two = 14
(a) Double fertilization and heterofertilization
(b) Bisporic-8 nucleate Allium kind embryosac
(c) Pollen as source of medicine

UNIT-IV

7. Write a brief note on role of Palynology in explration of fossil fuel. 14

8. Write a note on methods of studying fossil. 14

UNIT-V

9. Draw and define the structure of male and female strolili of Gnetum. Write the angiospermic characters obtained in Gnetum. Mention at lowest 2 gymnospermic characters obtained in Gnetum. 14

10. Write the economic importance of Gymnosperm. 14


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Earning:   Approval pending.