The animals having a two-chambered heart belo | vedclass

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(B) In the animal kingdom,the class $Pisces$ (fishes) is characterized by having a two-chambered heart,consisting of one atrium and one ventricle.This

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Pisces

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(B) In the animal kingdom,the class $Pisces$ (fishes) is characterized by having a two-chambered heart,consisting of one atrium and one ventricle.This heart pumps deoxygenated blood to the gills for oxygenation,which then circulates to the rest of the body.In contrast,$Amphibia$ and most $Reptilia$ have a three-chambered heart,while $Aves$ and mammals have a four-chambered heart.

The animals having a two-chambered heart belong to the class:

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