Question

What are gills? What functions today perform?​

Answer 1

Answer:

A gill is a respiratory organ found in many aquatic organisms that extracts dissolved oxygen from water and excretes carbon dioxide

functions - Gills are branching organs located on the side of fish heads that have many, many small blood vessels called capillaries. As the fish opens its mouth, water runs over the gills, and blood in the capillaries picks up oxygen that's dissolved in the water.

Answer 2

A gills is a respiratory organ found in many aquatic organisms that extracts dissolved oxygen from water and excretes carbon dioxide.

In other words, Gill is a respiratory organism, found in the aquatic animals, and their function extracts the dissolved oxygen from water, and release or excretes the carbon dioxide, and in some species, like Hermit crabs, gills are present in the land and they work by providing the moisture.

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