1.

Give the names of the class of vertebrates having 2,3,4 chambered heart

Answer»
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  • >> Pisces have a Two Chambered heart
  • >>Amphibians and REPTILES have a three chambered heart. The three-chambered heart consists of two atria and one ventricle.
  • >>All Mammals have FOUR chambered heart and exceptional reptile i.e Crocodile is also having four chambered heart. The four chambers are two atrium and two ventricles.
  • >>Birds, like mammals, have a 4-chambered heart (2 atria & 2 ventricles), with complete separation of OXYGENATED and de-oxygenated blood. The RIGHT ventricle pumps blood to the lungs, while the left ventricle pumps blood to the rest of the body.

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>> Pisces ( fishes ) : 2 Chambered heart

>> Amphibians and Reptiles : 3 Chambered heart

>> Birds , Mammals and Crocodile (an exceptional reptile) : 4 Chambered heart


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