121.
Evolution of different species in a given area starting from a point and spreading to other geographical areas is known as:
A
Adaptive radiation
B
Natural selection
C
Migration
D
Divergent evolution
Answer :
Adaptive radiation
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122.
Homology is exhibited by
A
Wings of butterfly, birds and bat
B
Paddle of whale, forearm of horse and forelimbs of man
C
Tail of monkey and bird
D
Sting of scorpion and Apis
Answer :
Paddle of whale, forearm of horse and forelimbs of man
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123.
Similarities in organism with different genotype indicates
A
Microevolution
B
Macroevolution
C
Convergent evolution
D
Divergent evolution
Answer :
Convergent evolution
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124.
The presence of gill slits, in the embryos of all vertebrates, supports the theory of
A
biogenesis
B
recapitulation
C
metamorphosis
D
organic evolution
Answer :
recapitulation
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125.
New breeds in domestic dogs are developed by
A
Sexual selection
B
Natural selection
C
Youth selection
D
Artificial selection
Answer :
Artificial selection
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126.
Which one does not favour Lamarckian concept of inheritance of acquired characters?
A
Lack of pigment in cave dwellers
B
Absence of limbs in snakes
C
Presence of webbed toes in aquatic birds
D
Melanisation of Peppered Moth in industrial areas
Answer :
Melanisation of Peppered Moth in industrial areas
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127.
When two species of different genealogy come to resemble each other as a result of adaptation, the phenomenon is termed
A
microevolution
B
co-evolution
C
convergent evolution
D
divergent evolution
Answer :
convergent evolution
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128.
Which of the following statements is correct about the origin and evolution of men?
A
Neanderthal men lived in Asia between 1,00,000 and 40,000 years back
B
Agriculture came around 50,000 years back
C
The Dryopithecus and Ramapithecus primates existing 15 million years ago, walked like men
D
Homo habilis probably ate meat
Answer :
Neanderthal men lived in Asia between 1,00,000 and 40,000 years back
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129.
Analogous organs are
A
Similar in origin
B
Similar in structure
C
Non functional
D
Similar in function
Answer :
Similar in function
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130.
Golden age of fishes is the name of
A
Devonian period
B
Ordovician period
C
Mesozoic era
D
Coenozoic era
Answer :
Devonian period
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