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Question-1
Which of the following is correct for auxin?
(A)
Ripening of fruits
(B)
Breaking of dormancy
(C)
Inhibition of flowering
(D)
Stimulation of root growth
Question-2
The hormone present in the liquid endosperm of coconut is
(A)
Auxin
(B)
Ethylene
(C)
Gibberellin
(D)
Cytokinin
Question-3
In plants, the induction of flowering by low temperature treatment is called
(A)
Pruning
(B)
Cryobiology
(C)
Vernalisation
(D)
Photoperiodism
Question-4
Curling of tendrils is due to
(A)
Nyctinatic
(B)
Phototrophism
(C)
Heliotropism
(D)
Thigmotropism
Question-5
Thigmotropism is best exhibited by
(A)
Root apex
(B)
Tendrils
(C)
Thorns
(D)
Lamina
Question-6
Which of the following is responsible for apical dominance?
(A)
GA
(B)
Auxin
(C)
Ethylene
(D)
Cytokinin
Question-7
Which of the following reduces plant growth and induces dormancy?
(A)
Auxin
(B)
Xyline
(C)
Cytokinin
(D)
Abscisic acid
Question-8
Which of the following is a growth-hormone, produced by a fungus?
(A)
Auxin
(B)
Gibberellin
(C)
Auromycin
(D)
None of these
Question-9
Coconut water has
(A)
Auxin
(B)
Cytokinin
(C)
Gibberellin
(D)
Ethylene
Question-10
Bud dormancy is induced by
(A)
ABA
(B)
IAA
(C)
Ethylene
(D)
Gibberalic acid
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Plus 2 Biology Science
ICSE/ISC
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