Multiple choice

Four chambered heart is a characteristic feature of

  1. fishes

  2. amphibians

  3. reptiles

  4. mammals
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Four chambered heart is present in mammals and birds. Four chambers are left atrium, left ventricle, right atrium and right ventricle. Oxygenated blood passes from the left atrium into the left ventricle. Deoxygenated blood passes from the right atrium into the right ventricle. The hearts of mammals and birds are four chambered to prevent the oxygenated blood from mixing with blood containing carbon dioxide (deoxygenated blood).

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