201.
Opening of floral buds into flowers, is a type of
A
autonomic movement of variation
B
paratonic movement of growth
C
autonomic movement of growth
D
autonomic movement of locomotion
Answer :
autonomic movement of growth
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202.
Abscisic acid controls
A
cell division
B
leaf fall and dormancy
C
shoot elongation
D
cell elongation and wall formation
Answer :
leaf fall and dormancy
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203.
Induction of rooting in stem cutting by auxin treatment would be beneficial in which of the following
A
Marchantia
B
Wheat
C
Cuscuta
D
Bougainvillea
Answer :
Bougainvillea
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204.
Scototropic movements induced by
A
Light
B
Night
C
Touch
D
Heat
Answer :
Night
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205.
DCMU is a heribidde which kills the plant by
A
Inhibiting phtolysis of water as it is a strong inhibitor of pigment system II
B
Inhitibing CO2 functioin as it is a strong inhibitor of pigment system II
C
Chceking respiration
D
Destroying Chloroplast
Answer :
Inhibiting phtolysis of water as it is a strong inhibitor of pigment system II
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206.
The formular of Auxin-A is
A
C18H30O7
B
C18H3H2O5
C
C12H30O6
D
C20H30N5
Answer :
C18H3H2O5
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207.
Phytohormones are :
A
chemicals regulating flowering
B
chemicals regulating secondary growth
C
hormones regulating growth from seed to adulthood
D
regulators synthesised by plants and influencing physiological processes
Answer :
regulators synthesised by plants and influencing physiological processes
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208.
Which of the following hormones is known to promote maleness in flowering plants
A
Gibberellic acid
B
Kinetic
C
IAA
D
2, 4-D
Answer :
Gibberellic acid
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209.
What is a stress hormone
A
Benzyl aminopurine
B
Decholorphenoxy acetic acid
C
Ethylene
D
Abscisic acid
Answer :
Abscisic acid
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210.
Which weedicide can defolite the complete forest
A
2, 4-D
B
MH
C
AMO - 1618
D
ABA
Answer :
AMO - 1618
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