101.
Cholodny-Went theory is related with
A
Turgor movement
B
Chemotropism
C
Photo-tropism
D
Phototropism and Geotropism
Answer :
Phototropism and Geotropism
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102.
Which one prevents photooxidtion and pigment destruction
A
Carotene
B
Phytohormone
C
Phytocynin
D
Phycoerythrin
Answer :
Carotene
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103.
Differentiation of shoot is controlled by
A
high gibberellin : cytokinin ratio
B
high auxin : cytokinin ratio
C
high cytokinin : auxin ratio
D
high gibberellin : auxin ratio
Answer :
high cytokinin : auxin ratio
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104.
Opening of flower is example of
A
Curvature movment
B
Epinasty
C
Hyponasty
D
Autonomus
Answer :
Epinasty
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105.
Importance of day lenght in flowering of plants was first shown in
A
Cotton
B
Petunina
C
Lemna
D
Tobacco
Answer :
Tobacco
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106.
The which of the following is growth inhibitor
A
IAA
B
ABA
C
NAA
D
GA3
Answer :
ABA
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107.
Movement of tendrils is
A
Hydrotropism
B
Chemotropism
C
Thigmotropism
D
Geotropism
Answer :
Thigmotropism
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108.
Active form of phytochrome for seed Germination is
A
Pfr- form
B
Pr - form
C
A and B both
D
None of the above
Answer :
Pfr- form
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109.
Which of the following hormones can replace vernalisation?
A
Auxin
B
Cytokinin
C
Gibberellins
D
Ethylene
Answer :
Gibberellins
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110.
Pomalin is sprayed over apple to increase fruit size, it is
A
Auxin
B
Mixture of auxin and gibberellin
C
Mixture of auxin and cytokinin
D
Mixtrue of cytokinin and gibberellin
Answer :
Mixtrue of cytokinin and gibberellin
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