Question

defination 2 chambered heart

Answer 1

Vertebrates, or animals with backbones, consist of several distinct classes: fish, amphibians, reptiles, mammals and birds. The vertebrate heart performs the function of pumping the organism's life blood around its body. While similar in many ways, the hearts of different vertebrate classes possess different numbers of chambers. These chambers determine how efficiently the heart separates the flow of oxygen-rich blood and oxygen-poor blood throughout the body. Vertebrate hearts can be categorized by the number of chambers they have:

Two chambers: one atrium and one ventricle (fish)Three chambers: two atria and one ventricle (amphibian and reptile)Four chambers: two atria and two ventricles (bird and mammal)
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Answer 2

vertibrate heart can categorised by the number of chambers they have two chambers one artium and second ventricle