1
LOYOLA COLLEGE (AUTONOMOUS), CHENNAI 600 034 B.Sc.DEGREE EXAMINATION PLANT BIOLOGY AND PLANT BIOTECHNOLOGY FIRSTSEMESTER APRIL 2017
16UPB1MC01- ALGAE AND BRYOPHYTES
Date: 19-04-2017 Dept. No. Max. 100 Marks
09:00-12:00 PART-A Answer the following, each within 50 words. 10 x 2 20 marks
1. What are endophytic algae? Give examples
2. Define haplontic life cycle.
3. What is coenobium?
4. Differentiate unilocular from pleurilocular sporangia.
5. Mention the uses of Spirulina.
6. Mention a few algae used as food.
7 Name any two fossil bryophytes.
8. What is protonema?
9. Mention the significance of intercalary meristem in Anthoceros.
10. Draw the internal structure of the leaf of Funaria.
PART-B Answer the following each within 500 words. Draw diagrams and flowcharts wherever necessary. 5 x 7 35 marks
11a Tabulate the pigments, flagellation and reserve food in any four major classes of algae.
b.What are the various means of vegetative reproduction in algae.
12a. Describe the sex organs in Chara.
b. Describe the habit of Sargassum.
13a. Describe the production, harvesting and factors affecting algal biomass.
b. How is mass cultivation of Bluegreen algae done? Mention its applications in field crops
14a.Give an outline of Rothalmers classification of bryophytes.
b. Represent the lifecycle pattern in Bryophytes.
15a. Describe the gametophyte ofMarchantia.
b. Describe the antheridia and archegonia in Anthoceros.
2
PART-C Answer any three of the following, each within 1200 words. Draw diagrams and flow charts wherever necessary. 3 x15 45 marks)
16. Describe the range of thallus organization in algae.
17. Bring out the process of sexual reproduction and post-fertilization changes in Gracilaria.
18. Mention the uses of algae in industry.
19. Give out the salient features of the three classes of Bryophytes.
20. Describe the sporophyte of Funaria.