Question

explain BRIEFLY breathing process in fishes in simple words Class VII.
PLEASE ANSWER ASAP. IT'S VERY VERY VERY URGENT. ​

Answer 1

Fish gulps water through mouth and forces it between the gills. The oxygen in it gets diffused into the blood circulating in gills and carbon dioxide in the bloodstream diffuses into the water which is carried out through a gap between fish's body and the gill cover.

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Answer 2

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Respiration in fish takes place with the help of gills. Most fish possess gills on either side of their head. Gills are tissues made up of feathery structures called gill filaments providing a large surface area for exchange of gases. ... Fish take in oxygen-rich water via their mouths and pump it over their gills.