LOYOLA COLLEGE (AUTONOMOUS), CHENNAI – 600 034
B.Sc. DEGREE EXAMINATION – PLANT BIOLOGY & PLANT BIO-TECH.
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FIRST SEMESTER – APRIL 2007
PB 1502 – ALGOL., MYCOL. & BRYOLOGY
Date & Time: 24/04/2007 / 1:00 – 4:00 Dept. No. Max. : 100 Marks
Part A
Answer all the questions (20 marks)
- Choose the correct answer (5 x 1 = 5 )
- The pigment characteristic of Rhodophycophyta is:
- a) Phycoerythrin b) Phycocyanin c) Fucoxanthin d) Carotene
- The term gonidium is associated with
- a) Vaucheria b) Volvox c) Anabaena d) Diatoms.
- Budding is seen in
- a) Saccharomyces b) Pucinia c) Rhizopus d) Albugo
- Which of the following is a coprophilous fungi?
- a) Colletotrichum b) Peziza c) Fusarium d) Aspergillus
- The female sex organ of bryophytes is called
- a) Ascogonium b) Oogonium c) Archegonium d)Carpogonium
- State whether the following statements are True or False (5 x 1 = 5 )
- Algae growing on rocks are called planktons.
- Mitospores are produced from unilocular sporangia.
- Taphrina is a obligate parasite..
- All mushrooms belong to basidiomycetes only.
- Anthoceros has symbiotic association with blue-green algae.
III. Complete the following (5 x 1 = 5)
- _____ and ______ are the prominent food reserve products of brown algae.
- Diatom cells are also referred to as _________.
- Sexual reproduction in Rhizopus leads to the formation of _______
- Colletotrichum belongs to the class ________.
- Apophysis, theca and __ are the three parts of Funaria
- Answer the following in about 50 words (5 x 1 = 5)
- Distinguish between coenobium and coenocyte.
- Write down the systematic position of Vaucheria.
- Define heterotrophic mode of nutrition.
- Mention any two methods of asexual reproduction in yeast
- List any four features of Hepaticopsida.
Part B
Answer any five of the following, each in about 350 words. Draw necessary diagrams.
(5 x 8 = 40)
- Compare and contrast the salient features of Blue-green algae
- Write about any four habitats of aquatic algae.
- Describe the cell structure of
- Give the schematic representation only of the life cycle of
- Write notes on the asexual reproduction in white rust fungi.
- Briefly describe the structure of Polyporus and draw its life cycle.
- Explain the structure of sporophyte on Funaria.
- Write notes on the economic importance of bryophytes.
Part C
Answer the following questions in about 1500 words. Draw necessary diagrams
(2 x 20 = 40)
- Enumerate the general characteristics of algae. Write about the various habits of algae.
(or)
- Describe the life history of Polysiphonia.
- Describe the life cycle of Puccinia graminis.
(or)
- Give a detailed account on the structure of gametophyte and sporophyte in Anthoceros.
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