161.
The concept of sudden genetic change which breeds truein a species is represented as
A
Inheritance of acquired characters
B
Natural selection
C
Laws of inheritance
D
Mutation
Answer :
Mutation
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162.
What is the Age of man
A
Proterozic
B
Recent
C
Mesozoic
D
100 years
Answer :
Recent
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163.
The change of the light-coloured variety of peppered moth (Biston betularia) to its darker variety (Biston carbonaria) is due to
A
mutation
B
regeneration
C
genetic isolation
D
temporal isolation
Answer :
mutation
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164.
Ancestor of man who first time showed bipedal movement
A
Cro-magnon
B
Australopithecus
C
Java apeman
D
Peking man
Answer :
Australopithecus
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165.
According to Darwin, The organic evolution is due to:
A
Interspecific competition
B
Competition within closely related species
C
Reduced feeding efficiency in one species
D
Intraspecific competition
Answer :
Intraspecific competition
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166.
Life is not found on moon because of
A
Absence of carbon
B
Absence of water
C
Absence of nitrogen
D
None of the above
Answer :
Absence of water
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167.
Which of the following is responsible for evolution according to Neo-Darwinism
A
Mutation
B
Natural selection
C
Mutation and Natural selection
D
Either (A) or (B)
Answer :
Mutation and Natural selection
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168.
Golden Age of Dinosaurs'/Age of reptiles was
A
Mesozoic
B
Coenozoic
C
Palaeozoic
D
Psychozoic
Answer :
Mesozoic
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169.
Life originated in
A
Air
B
Earth
C
Water
D
None of the above
Answer :
Water
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170.
Phenomenon of 'Industrial melanism' demonstrates
A
natural selection
B
induced mutation
C
geographical isolation
D
reproductive islolation
Answer :
natural selection
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