Question

Explain the breathing under water with a suitable example.

Answer 1

Answer:

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Explanation:

The lungs of mammals would not work very well for a fish, because one breath underwater would fill them with fluid and make them useless. Nonetheless, fish need oxygen to breathe, too. In order to remove oxygen from the water, they rely on special organs called "gills." 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.

Answer 2

A fish's lungs would not function effectively underwater since one breath would fill them with fluid and render them worthless.

• Fish, on the other hand, require oxygen to live.
• They rely on specialised organs called "gills" to take oxygen from the water. Gills are blood-vessel-rich feathery organs.
• Water enters a fish's mouth and is forced out through the gill canals.
• Dissolved oxygen enters the bloodstream and flows to the fish's cells when water passes over the gills' thin walls.