1.
Thigmotropic movement is best shown by
A.
movement in tendril
B.
insectivorous plants
C.
movement in roots
D.
movement in Mimosa pudica
Answer :
movement in tendril
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2.
Which one of the following nutrients in concerned with the growth of the plants in view of their role in synthesis of auxin
A.
S
B.
N
C.
Zn
D.
K
Answer :
Zn
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3.
Which of the following is a coconut milk factor
A.
Auxin
B.
ABA
C.
Morphactin
D.
Cytokinin
Answer :
Cytokinin
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4.
Which of the following effets of auxins is of wide application
A.
Induction of fruit development
B.
Induction of root initiation
C.
Prevention of abscission
D.
All of the above
Answer :
All of the above
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5.
Which pigment absorbs the red and far-red light
A.
Cytochrome
B.
Phytochrome
C.
Carotenoids
D.
Chlorophyll
Answer :
Phytochrome
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6.
Movement of male gametes in lower plants (Fern, Bryophytes) is
A.
Thermotactic
B.
Chemotropism
C.
Chemotactic
D.
Phototactic
Answer :
Chemotactic
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7.
The most common cytokinin is
A.
IAA
B.
Kinetin
C.
Isopentanly adenine
D.
Dehydrozeatin
Answer :
Isopentanly adenine
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8.
Which of the following plant hormone subsitutes for long photoperiod is flowering plant
A.
Auxin
B.
Gibberellin
C.
Cytokinin
D.
Enthylene
Answer :
Gibberellin
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9.
I.A.A. mainly inhibits growth of
A.
Root
B.
Leaf
C.
Shoot
D.
Generally whole plant
Answer :
Root
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10.
Auxin can be bioassayed by :
A.
Hydroponics
B.
Potometer
C.
Lettuce hypocotyl elongation
D.
Avena coleoptile curvature
Answer :
Avena coleoptile curvature
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