Q3 / 160 · JIPMER 2014 · Botany

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

  • A
    Scales on their hindlimbs
  • B
    Four-chambered heart
  • C
    Two special chambers crop and gizzards in their digestive tract
  • Correct answer
    D
    Egg with a calcareous shell

Solution

The birds have evolved from reptiles. Both birds and reptiles lay eggs which are large and telo lecithal with thick hard calcarious shell i.e., cleiodic eggs.

Hence, the correct answer is option: 'D'.

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