There has been an increase in the number of chambers in heart during evolution of vertebrates. Give the name of the class of vertebrates having two, three or four-chambered heart.
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There has been an increase in the number of chambers in heart during evolution of vertebrates. Give the name of the class of vertebrates having two, three or four-chambered heart.
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(i) Two-chambered heart—Pisces
(ii) Three-chambered heart—Amphibians and reptiles
except crocodiles
(iii) Four-chambered heart—Crocodiles, aves and
Mammalia.