261.
Lac is obtained from
A
Laccifer
B
Bombyx
C
Dactylopius
D
Lytta
Answer :
Laccifer
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262.
Which one provides the staple food of humans
A
Millets
B
Cereals
C
Legumes
D
Oil seeds
Answer :
Cereals
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263.
Botanical name of potato is
A
Solanum tuberosum
B
Manihot pumila
C
Malus pumila
D
Piper nigrum
Answer :
Solanum tuberosum
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264.
India produce the maximum amount of
A
Potato
B
Sweet potato
C
Tea
D
Corn
Answer :
Tea
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265.
Of the world's top five crops in terms of annual production
A
all five belong to the family Poaceae (Gramineae)
B
four belong to Poaceae (Graminaeae) and one to Leguminosae
C
four belong to Poaceae (Gramineae) and one to Solanaceae
D
three belong to Poaceae (Gramineae), one to Leguminosae and one to Solanaceae
Answer :
four belong to Poaceae (Gramineae) and one to Solanaceae
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266.
Nitrogen fixation by Rhizobium is increased in the presence of
A
Potassium
B
Nitrogen
C
Phosphorus
D
None of the above
Answer :
Phosphorus
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267.
Plant part used for culture is called
A
Scion
B
Stock
C
Explant
D
Callus
Answer :
Explant
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268.
The young chickens raised specially for meat ar called
A
Hen
B
Broilers
C
Cockereals
D
Pullets
Answer :
Broilers
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269.
Which of the following crops have been brought to India from New world?
A
Cashewnut, potato, rubber
B
Mango, tea
C
Tea, rubber, mango
D
Coffee
Answer :
Cashewnut, potato, rubber
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270.
The reason why some mutations which are harmful do not get eliminated from gene pool
A
They have future survival value
B
They are recessive and carried by heterozygous individuals.
C
They are dominant and show up more frequently.
D
Genetic drift occurs because of a small population
Answer :
They are recessive and carried by heterozygous individuals.
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