191.
Which of the following is not an inhibitory substance governing seed dormancy?
A
Abscisic acid
B
Phenolic acid
C
Para-ascorbic acid
D
Gibberellic acid
Answer :
Gibberellic acid
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192.
Gibberellins could be exracted from
A
Rice
B
Fungus/Fusraium moniliformis
C
More healthy plants
D
Diseased plants
Answer :
Fungus/Fusraium moniliformis
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193.
Hormone primarily connected with cell division is
A
IAA
B
NAA
C
cytokinin/Zeatin
D
gibberellic acid
Answer :
cytokinin/Zeatin
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194.
The excised leaf does not turn yellow if it is induced to root. This is attributed to synthesis in the root of
A
Ethylene
B
Ctokinins
C
Biggerellins
D
Auxins
Answer :
Ctokinins
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195.
An apparatus used to demonstrate phototropism is
A
Luxmeter
B
Solarometer
C
Clinostate
D
Heliotropic chamber
Answer :
Heliotropic chamber
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196.
Cut or excised leaves remain green for long if induced to root or dipped in
A
gibberellins
B
cytokinins
C
auxins
D
ethylene
Answer :
cytokinins
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197.
Clinostt is used in study for
A
Photosynthesis
B
Respiration
C
Geotropism
D
Osmosis
Answer :
Geotropism
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198.
Abscisic acid induces
A
Shoot elongation
B
Cell elengation and cell wall formation
C
Cell divisiion
D
Leaf fall and dormancy
Answer :
Leaf fall and dormancy
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199.
The phenomenon of photoperiodism in plants was discovered by
A
Garner and Allard
B
Steward and Salisbury
C
Thiman and Skoog
D
Hendricks and Borthwick
Answer :
Garner and Allard
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200.
Which one is prevents over-ripening ob banana and browning of cut fruits
A
Gibberellic Acid
B
Indole - 3 Acetic Acid
C
Ascorbic Acid
D
Abscisic Acid
Answer :
Ascorbic Acid
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