381.
Protoplast fusion was first established by
A
Mendel
B
Bateson
C
Cocking
D
Skoog
Answer :
Cocking
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382.
The first inorganic pesticide to be used commercially was
A
Bordeaux mixture
B
Burgandy mixture
C
D.D.T.
D
2 - 4 D
Answer :
Bordeaux mixture
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383.
Which of the following has been recently used for increasing productivity of super milk cows?
A
Artificial insemination by a pedigreed bull only
B
Superovulation of a high production cow only
C
Embryo transplantation only
D
A combination of superovulation, artificial insemination and embryo transplantation into a 'carrier cow' (surrogate mother)
Answer :
A combination of superovulation, artificial insemination and embryo transplantation into a 'carrier cow' (surrogate mother)
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384.
Surface fibres of commercial importance are obtained from
A
Cannabis
B
Helianthus
C
Gossypium
D
Agave
Answer :
Gossypium
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385.
In order to obtain virus-free plants through tissue culture the best method is
A
Embryo rescue
B
Anther culture
C
Meristem culture
D
Protoplast culture
Answer :
Meristem culture
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386.
Yeast yields
A
Vitamin B12
B
Tocopherol
C
Riboflavin
D
Ascorbic acid
Answer :
Riboflavin
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387.
Silk industry is related to
A
Sericulture
B
Apiculture
C
Pisciculture
D
Horticulture
Answer :
Sericulture
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388.
Which one of the following statement is correct in relation to honey bees?
A
Apis indica is the largest wild honey bee in India
B
Honey is predominantly sucrose and arabinose
C
Beewax is a waste product of honey bees
D
Communication in honey bees was discovered by Karl Von Frisch
Answer :
Communication in honey bees was discovered by Karl Von Frisch
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389.
Which statement is correct about centre of origin of plant?
A
More diversity in improved varieties
B
Frequency of dominant gene is more
C
Climatic conditions more favourable
D
None of these
Answer :
Frequency of dominant gene is more
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390.
Mycorrhiza promotes plant growth by
A
Absorbing inorganic ions from soil
B
Helping the plant in utiliting atmospheric nitrogen
C
Protecting the plant from infecton
D
Serving as plant growth regulator
Answer :
Absorbing inorganic ions from soil
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