Question

What is the role of gills in a fish?

1 year ago

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Jagjot Gill



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Natacha I Best Answer!

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Gills are the equivalent of "lungs" in a fish. It allows him to breath in the water. Gills are most commonly located on each side of a fish's head and helps him extract the oxygen contained in the water and release carbon dioxide.

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Jed F Profile Picture
Jed F Best Answer!

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Gills are the site of gas exchange in bony fish. They are specialised organs made up of arches, filaments and hill lamellae. The gill lamellae increases the surface area for gas exchange as water is passed over the gills via the fish. Oxygen is exchanged between the water and the capillaries within the full lamellae. Due to the countercurrent flow a concentration gradient for oxygen is maintained across the length of the gill, leading to the exchange of oxygen

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