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Question
There has been an increase in the number of chambers in heart during evolution of vertebrates. Give the names of the class of vertebrates having two, three or four-chambered heart.
Short Note
Solution
Two chambered heart: Chondrichthyes and Osteichthyes
Three chambered heart: Amphibia and Reptilia
Four chambered heart: Aves and Mammalia
shaalaa.com
Subphylum -Vertebrata/Craniata - Class: Reptilia
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