In which of the following vertebrate group/groups, heart does not pump oxygenated blood to different parts of the body?
(a) pisces and amphibians
(b) amphibians and reptiles
(c) amphibians only
(d) pisces only

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Solution

(d) Pisces only
In Pisces, the heart does not pump oxygenated blood to different parts of the body. This is because Pisces have two-chambered heart with one auricle and one ventricle. Since both the auricle and ventricle remain undivided, only deoxygenated blood passes through it. The deoxygenated blood then enters the gills for oxygenation from the ventricle.

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In which of the following vertebrate group/groups, heart does not pump oxygenated blood to different parts of the body? (a) pisces and amphibians (b) amphibians and reptiles (c) amphibians only (d) pisces only

In which of the following vertebrate group/groups, heart does not pump oxygenated blood to different parts of the body?
(a) pisces and amphibians
(b) amphibians and reptiles
(c) amphibians only
(d) pisces only