Botany pass 1st sem 2015 question paper. | Assam University
TDC Odd Semester Exam., 2015
BOTANY
(Pass)
( 1st Semester )
Course No. DOTP-1O1
(Diversity of Microbes and Cryptogams)
Full Marks : 35
Pass Marks: 12
Time:2 hours
The figures in the margin indicate frill marks for the questions
Answer five questions, taking one from each Unit
UNIT—I
1. (a) Who discovered the germ theory of disease?
(b) Write a note on various physical and chemkil means of controlling microorganisms. 3±3=6
2. (a) Give two examples of prokaryotic microbe. 1
(b) Give a comparative account of prokaryotic and eukaryotic organisms with necessary diagrams. 3+3’-6
UNIT—Il
3. (a) Point out the important features of Tobacco Mosaic Virus (TMV). 2
(b) Write a short account on isolation and purification of plant viruses.
4. (a) Give a short account on Rickett.sia and Chlamydiae. 1 Y2+ 1 ‘/3
(b) Describe the mechanism of genetic transfer in bacteria through transformation process. Add necessary diagrams. 3+1=4
UNIT—III
5. (a) Mention the salient features of Fritsch’s classification of Algae. 3
(b) Write a brief account on the sexual reproductive structures found in Chara. 4
6. (a) Point out the pigments and reserve food material of the class Phaeophyceae. 2
(b)Describe the process of sexual reproduction found in Ectocarpus with diagranis. 4+1=51
UNIT—IV
7. (a) What is heterothallism? Who discovered it? 1+1=2
(b) Describe the asexual method of reproduction in Phytophthora with necessary diagrams. 5
8. (a) Write a brief note on the important features of Lichens. 2
(b) Write an account on the beneficial and harmful activities of Fungi. 3+2=5
UNIT—V
9. (a) Why are bryophytes considered •as ‘Amphibians of plant kingdom’? 2
(b) Write an account on the ‘Evolution of Sporophytes in Bryophytes.’ 5
10. (a) What is heterospory? Give a brief note on the morphological nature of rhizophore. 1+4=5
(b) Write a short note on the structure and reproduction in Rhynia. 2
J16—1600/281 2015/SEM/ODD/BOTP—1O1/237
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