M.Sc. (Semester III) (CBCS) Examination Oct/Nov-2017
Microbiology
AGRICULTURAL MICROBIOLOGY
Day Date: Saturday, 25-11-2017 Max. Marks: 70
Time: 02.30 PM to 05.00 PM
Instructions: Part Question 1 is compulsory.
Figure to right indicate full marks.
Attempt any 4 questions from part II.
Answer to the Part I Part II are to be written in same answer booklet
Only.
PART- I
Q.1 Rewrite the sentences by choosing correct alternative from the
following:
14
Rhizobium in legume root nodules fixes nitrogen in the form of
Nitrate Ammonia
Nitrite Glutamic acid
enzyme act only on native cellulose molecules.
C1
C native Glucanases
Lose of productivity of soil is a phenomenon of
Bifragmentation Reduction
Desertification Disgeneration
The most quickly available source of nitrogen to plants
Nitrate fertilizers Ammonia fertilizers
Amide fertilizers Ammonia nitrate fertilizers
IMP stands for
Integrated pest manufacture Integrated pest Management
Integrated plant Manufacture Integrated pest Magnification
Green Manuring increases the crop yield by
5 10 15 25
30 50 80 90
Insecticides generally attack system.
Mascular Nervous
Circulatory Respiratory
is the father of tissue culture.
Haber landt Laibach
Bonner Gautheret
Growth hormone producing optical dominance is
Ethylene Auxin
Cytokinin Gibberellins
10) Part of plant used for culturing is called
Stock Callus
Explants scion
Page 2 of 2
SLR-E-39
11) are the plant cells which show totipotency.
Sieve tubes Cork cells
Xylem vessels Meristem
12) Transgenic plants are developed by
Introducing gene mutations
Introducing foreign genes
Deleting certain chromosomes parts
Stopping Spindle formation
13) Siderophores are
Cation chelating agents present in the bacteria
The most abundant poly cationic compound in the cell
Iron chelators present in the bacterial cell
Phosphate source
14) is sedimentary cycle.
Phosphorus cycle Hydrogen cycle
Oxygen cycle Nitrogen cycle
PART- II
Q.2 Answer any four questions from the following: 14
Write an essay on carbon cycle in environment.
Q.3 What is biofertilizer? Explain different major group of microorganisms as
biofertilizers.
14
Q.4 What is compost? Explain different methods of composting. 14
Q.5 Write short answer (any two) 14
Give physicochemical and biological properties of soil.
Explain influence of rhizosphere on crop productivity.
Give significance of vermicompost.
Q. 6 Write short notes on (any two) 14
Toxin produced by bacteria and fungi.
Techniques and applications of plant tissue culture
Transgenic crop plants