Animal KingdomHard

Question

The increase in complexity of the vertebrate circulatory system is represented by which of the following combinations ?

Options

A.Toad-rabbit-alligator-shark
B.Shark-frog-alligator-rabbit
C.Shark-crocodile-rabbit-frog
D.Alligator-dog-shark-toad

Solution

fish--->Amphibia---- >Reptile--->birds ---->mammals

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