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NEET2008ZoologyEvolutionActual

Which one of the following in birds, indicates their reptilian ancestry?

Options

  1. AScales on their hind limbs
  2. BFour chambered heart
  3. CTwo special chambers crop and gizzard in their digestive tract
  4. DEggs with a calcareous shell

Correct answer

A. Scales on their hind limbs

Step-by-step solution

The dry skin of reptiles is covered with scales to prevent water loss as an adaptation to terrestrial life. The hind limbs of birds also have scales, which confirm their reptilian ancestry.

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