Multiple choice

Besides mammals and birds, which animal has four-chambered heart?

  1. Frog

  2. Lizard

  3. Turtle

  4. Crocodile

  5. Snake
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Correct. Crocodile has four chambered heart. Four chambered heart is the characteristic feature of birds and mammals.There are two auricles and two ventricles, blood passes through heart twice thus making the type of circulation as double circulation. But besides birds and mammals,during the course of evolution,crocodiles have also acquired four-chambered heart although it is a reptile which posses three-chambered heart.

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