141. What is common to whale, seal and shark?

A Thick subcutaneous fat
B Convergent evolution
C Homoiothermy
D Seasonal migration
Answer :   Convergent evolution
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142. Which scientist gave the initial idea of survival of the fittest

A Wallace
B Spencer
C Darwin
D Mendel
Answer :   Spencer
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143. Which one of the following is incorrect about the characteristics of protobionts (coacervates and microspheres) as envisaged in the biogenic origin of life?

A They were able to reproduce
B They could separate combinations of molecules from the surroundings
C They were partially isolated from the surroundings
D They could maintain an internal environment
Answer :   They could separate combinations of molecules from the surroundings
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144. In Australia, marsupials and placental mammals have evolved to share many similar characteristics. This type of evolution may be referred to as

A Convergent evolution
B Adaptive radiation
C Divergent evolution
D Cyclical evolution
Answer :   Convergent evolution
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145. Flippers of Penguins and Dolphins are examples of

A Convergent evolution
B Industrial melanism
C Natural selection
D Adaptive radiation
Answer :   Adaptive radiation
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146. Two different species can not live for long duration in the same niche or habitat. This law is

A Allen's law
B Gause's hypothesis
C Dollo's rule
D Weisman's theory
Answer :   Gause's hypothesis
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147. Dinosaurs dominated the world in which of the following geological era?

A Devonion
B Coenozoic
C Jurassic
D Mesozoic
Answer :   Mesozoic
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148. The Mesozoic era of earth is called the

A Age of amphibians
B Age of armoured fishes
C Age of primitive man
D Age of ruling repthiles
Answer :   Age of ruling repthiles
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149. In a species, the weight of newborn ranges from 2 to 5 $$kg.$$ 97% of the newborn with an average weight between 3 to 3.3 $$kg$$ survive whereas 99% of the infants born with weights from 2 to 2.5 $$kg$$ or 4.5 to 5 $$kg$$ die. Which type of selection process is taking place?

A Directional selection
B Stabilising selection
C Disruptive selection
D Cyclical selection
Answer :   Stabilising selection
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150. Theory of evolution is mainly concerned with

A Spontaneous generation
B Theory of special creation
C Gradual change
D Conditions of environment
Answer :   Gradual change
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