Question

Explain how a fish respires in water, with the help of gills.

Answer 1

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Explanation:

$Gills are full of \\ \\ blood vessels. ... When the \\ \\ water moves through the \\ \\ gills, the dissolved oxygen \\ \\ from the water passes \\ \\ through the thin walls \\ \\ of gills and blood \\ \\ vessels, and enters the \\ \\ blood.$

Answer 2

most aquatic animals such as fish use special organs called the gills for respiration the gill are like slits and are made up of large number of thread-like structure called the filament.