Master of Science I (Microbiology) Examination: Oct Nov 2016
Semester II (New CBCS)
SLR No. Day
Date Time Subject Name Paper
No. Seat No.
SLR SO
621
Thursday
24/11/2016
10.30 AM
to
01.00 PM
Microbial Ecology
Diversity
C
VIII
Instructions: Part I is compulsory.
Attempt any four questions from Part II.
Part I and Part II should be written in same answer book.
Figures to the right indicate full marks.
Total Marks: 70
PART I
Q.1 Rewrite the following sentences by selecting correct answers from given
alternative.
14
The ecological niche of an organism is its
Foraging area Habitat
Territory Way of life
An ecosystem refers to
The part of earth and atmosphere capable of inhibiting the living
organisms.
The biotic factors in a habitat.
The community of organisms together with the environment in which they
live.
A community of organisms interacting with one another.
represent the largest population in an ecosystem.
Producers Top consumers
Decomposers Consumers
The effect of pollution is mainly on
Ecological balance Cell division
Crop rotation Mutation
Azotobacter is a
Symbiotic biofertilizer Terrestrial Saprophytic biofertilizer
Endotrophic fungus Ectotrophic mycorrhiza
Parmelia is a common example of
Fungi Algae
Lichens Bacteria
is a free living heterotrophic N2 fixer.
Rhizobium Streptococcus
Clostridium Azotobacter
is absent in prokaryotic cell.
Mesosome Mitochondria
Cell wall Cytoplasmic membrane
Page 1 of 2
Association of fungi or fungal hyphae in between and within cortex cells is
called
Ecto virus Ectomycorrhiza
Endomycorrhiza Ectomorphic mycorrhiza
10) The importance of ecosystem lies in
Flow of energy Bacterial degradation
CO2 production Oxygen production
11) Rhizobium in legume root nodules fixes nitrogen in the form of

Ammonia Nitrate
Nitrite Glutamic acid
12) The change of plant and animal communities in an orderly sequence in an
area, resulting in establishment of stable climax is called
Nudation Succession
Adaptation Reaction
13) Conservation of biodiversity in their natural habitat is called
conservation.
Ex Situ Protected
In Situ Stabilized
14) are most commonly used bacteria for bioremediation.
Klebsiella Azotobacter
Vibrio Pseudomonas
PART II
Q.2 Give an account of general characteristics and outline classification of bacteria. 14
Q.3 Write an essay on 'Nitrogen fixing bacteria'. 14
Q.4 Give an account of Alkalophilic and thermophilic microorganisms. 14
Q.5 Write short answers any two: 14
Write general characteristics of viruses
Explain role of microbes in acid mine drainage
Give general characteristics of methanogenic Archaebacteria.
Q.6 Write short answers any two: 14
Barophilic microorganisms
Magnetotactic bacteria
Concept of autotrophy