B.Sc. DEGREE EXAMINATION – PLANT BIOLOGY & PLANT BIO-TECH.
Date : 10-11-08
Time : 1:00 - 4:00
FIRST SEMESTER – November 2008
ED 01
PB 1502 / 1500 - PLANT DIVERSITY - I
(ALGOLOGY, MYCOLOGY, BRYOLOGY)
Dept. No. Max. : 100 Marks
PART – A
Answer ALL questions, each within 50 words only
1.
Distinguish between epipelic and epilithic algae.
2.
Mention any two features of prokaryotic cells.
3.
What is coenobium? In which genes it is found?
4.
List any four distinguishin features of Cyclotella.
5.
What are obligate parasites?
6.
Write about any two features of Apothecium of Peziza.
7.
What is dikaryotization?
8.
Name any two types of lichens.
9.
What are gemmae?
10.
What is the common name for Anthoceros? Why it is called so?
Answer the following, each within 300 words.
Draw a diagrams wherever necessary.
PART – B
11.
a) Give an account of pigments in different classes of algae.
(or) b) Discuss the lifecycle patterns in Algae.
12.
a) Describe the cell structure of Anabaena
(or) b) Give an account of asexual reproduction in Ectocarpus.
13.
a) Explain parasexuality in Fungi.
(or) b) Write an account of nutrition in Fungi.
14.
a) Discuss sexual reproduction in Saccharomyces
(10 X 2 = 20 marks)
(5 X 7 = 35 marks)
(or) b) Describe the internal structure of thallus of Fruticose lichen.
15.
a) Explain the structure of archegonium in bryophytes.
(or) b) Describe the capsule in Funaria.
PART – C
Answer any three questions, each within 1200 words. (3 X 15 = 45 marks)
16.
Give an account of classification of algae proposed by Harold C Bold.
17.
Describe the lifecycle of Polysiphonia.
18.
Discuss the various fruiting bodies produced by fungi.
19.
Why puccinia is called heterocecious fungus? Explain its lifecycle.
20.
Compare the sporophyte of marchantia and Anthoceros.
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