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Q.

Aves originated from reptiles. Which of the following is not an advancement of birds over reptiles?

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a

Homeothermy

b

Complete double circulation

c

Insulated body

d

Internal fertilisation

answer is D.

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Detailed Solution

Internal fertilisation is exhibited by both reptiles and birds.Reptiles are cold blooded (poikilothermy). They exhibit incomplete double circulation. They are without insulation.
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