151. Prototheria have developed from

A Birds
B Eutheria
C Amphibia
D Reptilaia
Answer :   Reptilaia
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152. Frequency of a character increases when it is

A recessive
B dominant
C inheritable
D adaptable
Answer :   adaptable
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153. Spallanzani's experiment proved

A Air is necessary for spontaneous generation
B Air from outside while entering the flasks carried small bacteria
C Air is unnecessary for spontaneous generation
D The contents of flask could not be boiled properly
Answer :   Air from outside while entering the flasks carried small bacteria
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154. Industrial melanism as observed in peppered moth proves that

A the melanic form of the moth has no selective advantage over lighter form in industrial area
B the lighter-form moth has no selective advantage either in polluted industrial area or non-polluted area
C melanism is a pollution-generated feature
D the true black melanic forms arise by a recurring random mutation
Answer :   the true black melanic forms arise by a recurring random mutation
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155. During organ differentiation in Drosophila an organ is often modified to another organ such as wings could be replaced by legs. Genes responsible for such metamorphosis are called

A Homeotic genes
B Plastid genes
C Double dominant genes
D Complimentary genes
Answer :   Homeotic genes
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156. The similarity of bone structure in the forelimbs of many vertebrates is an example of

A Homology
B Analogy
C Adaptive radiation
D Convergent evolution
Answer :   Homology
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157. Phenomenon of organisms resembling others for escaping from enemies is

A Adaptation
B Mimicry
C Homology
D Analogy
Answer :   Mimicry
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158. Which of the following facts develop suspicions in Lamarckism

A Human females are not born with bored ear pinna although they have been bored for thousands of years.
B Giraffe has long neck to eat leaves of tall trees
C A stag can run fast to protect against the enemies
D None of the above
Answer :   Human females are not born with bored ear pinna although they have been bored for thousands of years.
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159. Connecting link between annelida and Mollusca

A Cuttle fish
B Octopus
C Neopilina
D Nautilus
Answer :   Neopilina
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160. A population of a species invades a new area. Which of the following condition will lead to adaptive radiation?

A Area with many habitats occupied by a large number of species
B Area with large number of habitats having very low food supply
C Area with a single type of vacant habitat
D Area with many types of vacant habitats
Answer :   Area with many types of vacant habitats
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