Multiple choice

Which of the following kinds of circulation is observed in amphibians and reptiles?

  1. Incomplete single circulation

  2. Single circulation

  3. Double circulation

  4. Incomplete double circulation
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

In amphibians and reptiles, incomplete double circulation is observed. In incomplete double circulation, the blood comes to the heart through two different routes, but goes out through a single route.

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