In which of the following vertebrate group/gr | vedclass

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(A) In $Pisces$ (fishes),the heart is two-chambered,consisting of one atrium and one ventricle. The heart pumps deoxygenated blood to the gills for ox

Vedclass · Accepted Answer

Pisces only

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(A) In $Pisces$ (fishes),the heart is two-chambered,consisting of one atrium and one ventricle. The heart pumps deoxygenated blood to the gills for oxygenation. This oxygenated blood then goes directly to the rest of the body without returning to the heart. Thus,the heart only pumps deoxygenated blood. This is known as single circulation. In amphibians and reptiles,the heart is three-chambered (or partially four-chambered in reptiles),allowing for the pumping of both oxygenated and deoxygenated blood to the body tissues. Therefore,the correct group is $Pisces$ only.

In which of the following vertebrate group/groups,does the heart not pump oxygenated blood to different parts of the body?

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