M.Sc. DEGREE EXAMINATION, NOVEMBER 2017
First Semester
Botany
PLANT DIVERSITY II (PTERIDOPHYTES,
GYMNOSPERMS AND PALEOBOTANY)
(CBCS 2016 onwards)
Time 3 Hours Maximum 75 Marks
Part A (10 x 2 20)
Answer all the questions.
1. Horsetail
2. Dictyostele
3. Apogamy
4. Selaginella
5. Siphonogamy
6. Archegonium
7. Ephedra
8. Microstrobili
9. Geological time scale
10. Fossil pollen
Sub. Code
525102
RW-866
2
Sp 6
Part B x 5 25)
Answer all the questions, choosing either or
11. Briefly explain spornea classifications of
Pteridophytes.
Or
Discuss the salient features of Psilophytes.
12. Describe the differences between homo and
heterosporous ferns.
Or
Write a short notes on Sorus.
13. Write a note on the micro and megasporophylls in
gymnosperm.
Or
Discuss the position of Gymnosperm in the plant
kingdom.
14. Explain the development of gametophyte in Cycas.
Or
Discuss the general characters of Gnetum.
15. Write note on fossil fuel.
Or
Give an account of lepidodendron.
RW-866
3
Sp 6
Part C x 10 30)
Answer any three questions.
16. Write an essay on the reporduction of methods
pteropsida.
17. Give a detailed account on the economic importance of
Pteridophytes.
18. Describe in detail on the general characteristics of
Gymnosperms.
19. Write an elaborate notes on the sexual reproduction in
Pinus.
20. Describe in detail on fossil gymnosperm.
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