Two chambered heart occurs in
(a) crocodiles
(b) fish
(c) aves
(d) amphibians

Academic Biology NCERT Class 9

Correct Answer: (b) fish

Explanation:

Fishes have a two-chambered heart, one atrium, and one ventricle with unidirectional circulation.

Crocodiles are reptiles and have three-chambered hearts along with the amphibians as they have two atriums and one ventricle.

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Updated on: 05-Jan-2023

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