List of top Plant Biotechnology Questions asked in CUET (PG)

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Which factors do show considerable influence on the activity of nitrogenase enzyme during $N_{2}$ fixation?
A. Molybdenum
B. Molecular $H_{2}$
C. Boron
D. Leghemoglobin
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Which inorganic form(s) of nitrogen do plants assimilate?
A. Amino acids
B. $NH_{4}^{+}$
C. ${NO_{3}}^{-}$
D. ${NO_{2}}^{-}$
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Which are the symbiotic nitrogen-fixing bio-fertillizers?
A. Rhizobium
B. Azotobacter
C. Azospirillum
D. Azollae
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Match List - I with List - II.

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Match List - I with List - II.

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Given below are two statements: one is labelled as Assertion (A) and the other is labelled as Reason (R).
Assertion (A): Uptake of hydrogenase activity is a mechanism of removing hydrogen from the site of nitrogen activity which concurrently carries out reactions of nitrogen fixation and hydrogen production.
Reason (R): Acetylene reduction technique is a common method of measuring nitrogenase activity.

Mention the correct sequence of the formation of compounds during biological nitrogen fixation.
A. Hydrazine
B. Nitrogen
C. Ammonia
D. Diamide
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The steps involved in the process of soyabean root nodule formation are:
A. Bacteria emits signals to stimulate root hairs to elongate
B. Cortex and pericycle cells begin division
C. Roots emits signals to attract Rhizobium
D. Bacteria within vesicles develop into bacteroids
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Find the correct order for the conversion of organic form of nitrogen into inorganic form by soil microorganisms.
A. Formation of nitrites
B. Formation of ammonia
C. Formation of free nitrogen
D. Formation of nitrates
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Given below are two statements: one is labelled as Assertion (A) and the other is labelled as Reason (R).
Assertion (A): Manure is an organic substance that is obtained from decomposition of vegetable and animal waste.
Reason (R): Manure is readily soluble in water thus it is absorbed by plants quickly.
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Which of the following is not a phosphate solubilizing microorganism?

Which is not a free-living asymbiotic nitrogen fixation microorganism?

Which of the following organism is a free living diazotroph?

Which enzyme catalyzes the conversation of molecular $N_{2}$ to $NH_{3}$?

The conversion of ammonia or ammonium ions to nitrite followed by its oxidation to nitrate is called as:

Which of the soil bacteria convert ammonium into nitrite?

Nitrogen-fixing bacteria convert atmospheric nitrogen into which product?

Match List - I with List - II.

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How many ATP molecules are required to produce two $NH_{3}$ molecules during nitrogen fixation?

Match List - I with List - II.

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Match List I with List - II.

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Arrange the given steps for inducing somaclonal variations during androgenesis in correct order:
A. Dedifferentiation
B. Diploidization
C. Regeneration
D. Callogenesis
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Which are widely used techniques to fuse plant protoplasts?
A. Chemical fusion by PEG
B. Electric stimulation
C. High $Ca^{2+}$ -high pH method
D. Particle gun method
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Which of the following are used as osmotic stabilizers for the maintenance of protoplasts?
A. Glucose
B. Mannitol
C. PEG
D. Sorbitol
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