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Question-1
The plant hormone commercially used for fruit ripening is
(A)
GA
(B)
IAA
(C)
Kinetin
(D)
Ethylene
Question-2
A good example of an auxin herbicide is
(A)
IAA
(B)
NAA
(C)
2, 4-D
(D)
IBA
Question-3
Movement in leaves in
Mimosa pudica
is
(A)
Epinastic
(B)
Nyctinastic
(C)
Photonastic
(D)
Seismonastic
Question-4
Low temperature treatment of seed is called as
(A)
Scarification
(B)
Pasturization
(C)
Vernalization
(D)
Fermentation
Question-5
Bud dormancy is induced by
(A)
ABA
(B)
IAA
(C)
Ethylene
(D)
Gibberalic acid
Question-6
During drought condition, the plants produce a hormone known as
(A)
Ethylene
(B)
Abscisic acid
(C)
Indole acetic acid
(D)
Indole bytyric acid
Question-7
An efficient root inducing chemical, useful in horticulture, is
(A)
GAA
(B)
IBA
(C)
NAA
(D)
2, 4-D
Question-8
Removal of seed coat in dormant seeds, by mechanical methods, is called
(A)
Separation
(B)
Vernalization
(C)
Emasculation
(D)
Scarification
Question-9
Which among the following is a synthetic plant hormone?
(A)
IAA
(B)
GA
(C)
2, 4-D
(D)
ABA
Question-10
In plants, the induction of flowering, by low temperature treatment, is called
(A)
Pruning
(B)
Cryobiology
(C)
Vernalization
(D)
Photo periodism
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Plus 2 Biology Science
ICSE/ISC
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