Multiple choice

The avian heart is __________.

  1. two–chambered

  2. four–chambered

  3. three–chambered

  4. five–chambered
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Aves (birds) are warm blooded animals and have four chambered heart, e.g. ostrich, duck, etc. Mammals also have four chambered heart. Two-chambered heart- is found in pisces (fishes). Three-chambered heart – is found in amphibia (e.g. frogs, toads) and all reptiles (lizards, snakes) except crocodiles as they have four-chambered heart. Five chambered heart – is not present in any member of the animal kingdom. 

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