161.
Rauvolfia serpentine belongs to family
A
Chenopodiaceae
B
Malvaceae
C
Solanaceae
D
Apocyanaceae
Answer :
Apocyanaceae
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162.
Which part of the tobacco plant is infected by Meloidogyne incognita ?
A
Flower
B
Leaf
C
Stem
D
Root
Answer :
Root
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163.
Which one is a source of rubber
A
Ficus elastica
B
Parthenium hysterophorus
C
Hevea brasiliensis
D
Cedrus deodara
Answer :
Hevea brasiliensis
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164.
Mycorrhiza helps in
A
Nutrition uptaking
B
Food manufacturing
C
Disease resistance
D
Disease prevention
Answer :
Nutrition uptaking
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165.
Which of the following is example of new crop
A
Jojoba
B
Leucaena
C
Guayule
D
All of the above
Answer :
All of the above
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166.
Lac is produced by
A
Males
B
Females
C
Far more by females then males
D
More by males than females
Answer :
Far more by females then males
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167.
In which crops is the method of mass selection applied
A
Cross-pollinated
B
Self-pollinated
C
Both self and cross pollinated
D
Potato and sugarcane
Answer :
Both self and cross pollinated
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168.
Jaya and Ratna developed for green revolution in India are the varieties of
A
maize
B
rice
C
wheat
D
bajra
Answer :
rice
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169.
The insect thrives on morus alba is
A
Lac insect
B
Cochineal insect
C
Honey bee
D
Silk moth
Answer :
Silk moth
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170.
Reason of fast speciation in present day crop plants is
A
mutation
B
isolation
C
polyploidy
D
sexual reproduction
Answer :
polyploidy
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