131.
The weakest point of Darwinism was that it had no explanation for
A
Struggle for existence
B
Survival of the fittest
C
Variations
D
Enormous rate of production
Answer :
Variations
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132.
Believers of spontaneous generation theory believed that
A
Life originated from other similar organisms or spontaneously
B
Life originated only spontaneously
C
Life originated from similar organisms
D
Life originated from air
Answer :
Life originated only spontaneously
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133.
Which of the following structures is homologus to the wing of a bird?
A
Dorsal fin of a Shark
B
Wing of a Moth
C
Hind limb of Rabbit
D
Flipper of Whale
Answer :
Flipper of Whale
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134.
Industrial melanism is an example of
A
defensive adaptation of skin against ultraviolet radiations
B
drug resistance
C
darkening of skin due to smoke from industries
D
protective resemblance with the surroundings
Answer :
protective resemblance with the surroundings
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135.
The concept of chemical evolution is based on
A
interaction of water, air and clay under intense heat
B
effect of solar radiation on chemicals
C
possible origin of life by combination of chemicals under suitable environmental conditions
D
crystallization of chemicals
Answer :
possible origin of life by combination of chemicals under suitable environmental conditions
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136.
Nucleoproteins gave first sign of
A
Species
B
Evolution
C
Life
D
None of the above
Answer :
Life
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137.
Weismann cut off tails of mice generation after generation but tails neither disappeared nor shortened showing that
A
Darwin was correct
B
Tail is an essential organ
C
Mutation theory is wrong
D
Lamarckism was wrong in inheritance of acquired characters
Answer :
Lamarckism was wrong in inheritance of acquired characters
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138.
Which one of the following phenomena supports Darwin's concept of natural selection in organic evolution?
A
Development of transgenic animals
B
Production of 'Dolly', the sheep by cloning
C
Prevalence of pesticide resistant insects
D
Development of organs from 'stem cells' for organ transplantation
Answer :
Prevalence of pesticide resistant insects
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139.
Which one of the following features is closely related with the evolution of humans?
A
Loss of tail
B
Shortening of jaws
C
Binocular vision
D
Flat nails
Answer :
Loss of tail
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140.
Now the basis of origin of life is
A
Spontaneous generation
B
God's desire
C
Sunlight on mud
D
None of the above
Answer :
None of the above
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