Osmania University (OU) 2007 M.Sc Information and Communication Technology BIOLOGY AND DIVERSITY OF ALGAE, BRYOPHYTES, - Question Paper

(DBOT 01)
M.Sc. (Previous) DEGREE EXAMINATION, DECEMBER 2007.

First Year

Botany

Paper I BIOLOGY AND DIVERSITY OF ALGAE, BRYOPHYTES,
PTERIDOPHYTES AND GYMNOSPERMS

Time : 3 hours Maximum : 100 marks
ans any 5 ques. from part A.

every ques. carries eight marks.

ans ALL ques. from part B.

every ques. carries 15 marks.

part A - (5 * eight = 40 marks)

1. Heterocyst.
2. Auxospore formation.
3. Anthoceras.
4. Archegoniophore.
5. Rhynia.
6. How pteridophytes are more evolved over bryophytes?
7. Caytonia.
8. Wood of coniferales.

part B - (4 *15 = 60 marks)

9. (a) define reproduction and life cycle in Algae.
Or
(b) Write an account on the thallus organisation in phaeophyta.

10. (a) define the general characters and range of thallus in
bryophytes.
Or
(b) define the evolution of sporophyte in bryophytes.

11. (a) define heterospory and seed habit in pteridophytes.
Or
(b) Write an account on the classification of pteridophytes.

12. (a) define the evolutionary tendencies in the female gametophyte of
gnetales.
Or
(b) Write an account on the distribution and classification of
gymnosperms.

Earning:   Approval pending.