M.Sc. (Semester (CBCS) Examination Nov/Dec-2018
Botany
BIOLOGY AND DIVERSITY OF FUNGI, BACTERIA,VIRUSES AND LICHENS
Time: 2½ Hours Max. Marks: 70
Instructions: All questions are compulsory.
Figures to the right indicate full marks.
Draw a neat, well labeled, complete diagram wherever necessary.
Use of calculators, cell phones, or any other electronic gadgets is
prohibited.
Q.1 Rewrite the sentences by choosing correct answer from given alternatives: 14
Infectious RNA particles without protein coat are
prion virusoid
viroid virus
Usnea is the example of Lichens.
Crustose Foliiose
Fruiticose Both b c
All the bacteria fix nitrogen except
Rhizobium E. coli
Azotobacter Cyanobactera
Perfect stage of fungus means
when the fungus is perfectly healthy
when it reproduce asexually
when it forms perfect sexual spores
None of these
Who crystallized isolated viruses for the first time?
W. M. Stanely F.C. Bawden
K.M. Smith D. Ivanowski
Myxomycetes are commonly called
Slime moulds Brown moulds
Green moulds Diatoms
The classification of fungi is based on
The structure of vegetative mycelium
Asexual stage
The sexual reproductive stage
Both mycelia structure and sexual stage
Peziza is a member of
Phycomycetes Ascomycetes
Basidiomycetes Deterromycetes
Ergot is obtained from
Rhizopus Claviceps
Albugo Mucor
10) The symbiotic association ship between fungi and roots of higher plants is
called
Lichens Mycorrhizae
Parasite None
Page 2 of 2
SLR-VD-93
11) In bacteria endoplasmic reticulum and Golgi bodies absent but is
present.
ribosome mitochondria
chromosomes true nucleus
12) Rhizopus multiplies by the production of
Zoospores Conidiospores
Sporangiospores Akinetes
13) Which of the following disease is caused by virus?
Typhoid Cholera
Tuberculosis AIDs
14) Bacteria that are responsible for fermentation of dairy milk is
Acetobacter Lactobacillus
Rhizobium All of these
Q.2 Answer the following:- (Any four) 08
What is Ascus?
Explain the term karyogamy.
Name the fruiting body of Basidiomycetes.
Justify the living nature of viruses.
Name any two bacterial diseases of plants.
Write short notes on. (Any two) 06
Parasexuality in fungi
Role of fungi in industry
Steps involved in Pleurotus-mushroom cultivation
Q.3 Answer the following:- (Any two) 08
What are lichens? Explain any two types of lichens with suitable example.
Explain the life cycle is Stemonites.
Define spawn, explain the procedure of spawn making.
Answer the following:- (Any one) 06
Enlist the economic importance of bacteria.
Give the silent features of Ascomycota.
Q.4 Answer the following:- (Any two) 10
Explain the sexual reproduction in Oomycetes.
Explain the life cycle in Plasmodiophora brassicae.
Explain general characters of bacteria.
Answer the following:- (Any one) 04
Explain the germination of urediospore in Puccinia graminis.
What is ascocarp? Describe various kinds of ascocarp within the
Ascomycotina.
Q.5 Answer the following:- (Any two) 14
Explain the sexual reproduction in Mucorales.
Enlist the classes of Mastigomycotina? Give the brief characters of each class
with suitable example of each.
Write an account of ultra structure of viruses.