241.
Quinine is extracted from
A
Bark of Cinnamomum
B
Leaves of Ocimum
C
Leaves of Cinnamomum
D
Bark of Cinchona
Answer :
Bark of Cinchona
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242.
Tissue culture is beneficial for
A
Micropropagation
B
Production of disease free plants
C
Androgenic haploid
D
All of the above
Answer :
All of the above
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243.
What is the reason of formation of embryod from pollen grain in tissue culture medium
A
Cellular totipotency
B
Organogenesis
C
Double fertilization
D
Test tube culture
Answer :
Cellular totipotency
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244.
Which amongst the following is used in raising super-milk cows
A
Artificial insemination with pedigree bull
B
Embryo transplantation
C
Superovulation of high yielding cow
D
All of the above
Answer :
All of the above
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245.
Heterosis (Hybrid Vigor) desirable in vegetatively propagated plants, beceuse
A
Heterosis maintains longer duration
B
These plants are easy to cultivate
C
Vegetative reproduction help in fast multiplication
D
It is due to homozygosity
Answer :
Heterosis maintains longer duration
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246.
Which crop variety is not due to induced mutations ?
A
Reimei of Rice
B
Prabhat of Arhar
C
Sharbati Sonora of Wheat
D
Aruna of Castor
Answer :
Aruna of Castor
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247.
Which of the following statement is incorrect about D.D.T
A
DDT is a pesticide, which is an organochlorine
B
It is lipophillic and nonbiodegradable
C
Milk is a good carrier of DDT
D
DDT does not undergo bioconcentration, when it enters in food chain
Answer :
DDT does not undergo bioconcentration, when it enters in food chain
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248.
First transgenic plant was tobacco and it contain resistant gene for
A
Insect resistant
B
Herbicide resistant
C
Pestresistant
D
Frost resistant
Answer :
Herbicide resistant
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249.
Which of the following is the examples of biofertilizers
A
Gree manure
B
Compost manure
C
BGA and VAm
D
Green manure & chemical fertilizers
Answer :
BGA and VAm
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250.
Which of the following is a weedicide
A
DDT
B
BHC
C
2-4 D
D
Aldrin
Answer :
2-4 D
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