LOYOLA COLLEGE (AUTONOMOUS), CHENNAI – 600 034
B.Sc. DEGREE EXAMINATION – PLANT BIOLOGY & PLANT BIO-TECH.
FIRST SEMESTER – NOVEMBER 2012
PB 1505/1502/1500 – PLANT DIVERSITY -(ALGOLOGY, MYCOLOGY, BRYOLOGY)
Date : 08/11/2012 Dept. No. Max. : 100 Marks
Time : 1:00 – 4:00
PART –A
ANSWER THE FOLLOWING, EACH WITHIN 50 WORDS ONLY: (10 x 2 = 20)
- Distinguish between Coenobium and Coenoctye.
- Write down the systematic position of Cyclotella.
- What is Dikaryotization?
- What are Gemmae?
- Mention any two features of Prokaryotic cells.
- What are Obligate parasites?
- List any four features of Hepaticopsida.
- What is Protonema?
- Comment on Biofertilizers.
- Name any two types of Lichens.
PART – B
ANSWER THE FOLLOWING, EACH WITHIN 500 WORDS;
DRAW DIAGRAMS, FLOWCHARTS WHEREVER NECESSARY (5 X 7 = 35)
- a) Describe the sexual reproduction of P
(OR)
- b) Give an account of pigments in different classes of Alga.
- a) Discuss the life cycle patterns in algae.
(OR)
- b) Give an account of the salient features of Blue – Green Algae.
- a) Give an account on Alexopoulus classification of fungi.
(OR)
- b) Describe the asexual reproduction in Albugo.
- a) Enumerate the economic importance of Lichens.
(OR)
- b) Give an account on the structure of Funaria
- a) Describe the fruiting body of Polyporus with suitable diagram.
(OR)
- b) Write notes on the economic importance of bryophytes
PART –C
ANSWER THE FOLLOWING, EACH WITHIN 1200 WORDS;
DRAW DIAGRAM, FLOW CHARTS WHEREVER NECESSARY: (3 x 15 = 45)
- Explain the classification of Algae proposed by Harold C Bold.
- Give an account of life cycle of Heterocious Fungus.
- Explain the structure and reproduction of Lichens. Add a note on its symbiotics relationship.
- Compare the gametophyte of Marchantia and Anthoecros.
- Write an essay on the economic importance of fungi.