There has been an increase in the number of chambers

Question:

There has been an increase in the number of chambers in the heart during the evolution of vertebrates. Give the names of the class of vertebrates having two, three or four-chambered heart.

Solution:

Two-chambered hearts: Chrondrichytes and osteocytes

Three- chambered heart: Amphibia and Reptile

Four-chambered heart: Aves and mammalian

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