NEET BIOLOGY

Detailed explanation-1: -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.

Detailed explanation-2: -Gills are feathery organs full of blood vessels. A fish breathes by taking water into its mouth and forcing it out through the gill passages. As water passes over the thin walls of the gills, dissolved oxygen moves into the blood and travels to the fish’s cells.

Detailed explanation-3: -Gills help fish breathe because it makes oxygen so they can breathe and it makes air for them. The gills help the fish breathe because if they did not have gills, the fish would not breathe.

Detailed explanation-4: -Fish gills are responsible for a number of critical functions in addition to respiration: osmoregulation, excretion of nitrogenous waste, pH regulation, and hormone production (Herrero et al., 2018).

Detailed explanation-5: -Gills are the organs on the sides of fish and other water creatures through which they breathe.