121.
Banana plants can be multiplied rapidly by adopting
A
Aerial grafting
B
Aerial stem cutting
C
Rhizome cutting
D
X-ray irradiation of fruits
Answer :
Rhizome cutting
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122.
In maize, hybrid vigour is exploited by
A
crossing of two inbred parental lines
B
harvesting seeds from the most productive plants
C
inducing mutations
D
bombarding the seeds with DNA
Answer :
crossing of two inbred parental lines
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123.
Scopolamine or "Truth Drug" of world war II was obtained from
A
Rauvo serpentina
B
Atropa belladona
C
Digitalis purea
D
Papaver somniferum
Answer :
Atropa belladona
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124.
What are the main objectives of plant breeding
A
More yield
B
Better quality
C
Stress resistance
D
All of the above
Answer :
All of the above
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125.
International Rice Research Institute (IRRI) is located at
A
Hyderabad (India)
B
Manila (Philippines)
C
New York (U.S.A.)
D
Tokyo (Japan)
Answer :
Manila (Philippines)
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126.
Flax fibres belong to
A
Linum Usitatissimuym
B
Crotalaria juncea
C
Cocos nucifera
D
Cannabis sativa
Answer :
Linum Usitatissimuym
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127.
BGA is chiefly used as biofertilizer in the crop of
A
Wheat
B
Gram
C
Mustard
D
Paddy
Answer :
Paddy
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128.
Pests reistant to insecticides have
A
Less permeable cuticle
B
Capacity of faster storage of toxin in at
C
Enzymes for metabolizing toxins
D
All of the above
Answer :
All of the above
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129.
National botanical Research Institute (NBR) is situated at
A
Lucknow
B
Bombay
C
Calcutta
D
Delhi
Answer :
Lucknow
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130.
What will happen if a wheat field is inoculated with bacterium Rhizobium
A
The soil will become rich in calcium
B
The soil will become rich in nitrogen
C
There will be no effect on soil nitrogen
D
The soil will be rich in O2
Answer :
There will be no effect on soil nitrogen
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