In which of the following is a single circula | vedclass

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(A) In a single circulation,blood passes through the heart only once during one complete cycle of the body. This type of circulation is characteristic

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Fish

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(A) In a single circulation,blood passes through the heart only once during one complete cycle of the body. This type of circulation is characteristic of fishes,where the heart pumps deoxygenated blood to the gills for oxygenation,and from there,it travels directly to the rest of the body. In contrast,amphibians,reptiles,and humans exhibit double circulation,where blood passes through the heart twice during each cycle.

Column-$I$	Column-$II$
$P$. Single circulation	$I$. Fishes
$Q$. Incomplete double circulation	$II$. Amphibians and Reptiles
$R$. Complete double circulation	$III$. Crocodiles,Birds,and Mammals

In which of the following is a single circulation of blood observed?

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Column-$I$ Column-$II$
$P$. Single circulation $I$. Fishes
$Q$. Incomplete double circulation $II$. Amphibians and Reptiles
$R$. Complete double circulation $III$. Crocodiles,Birds,and Mammals

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