Question

Breathing in Earthworms :-

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Answer 1

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Breathing in Earthworms :-

1. Earthworms do not have lungs; instead, they breathe through their skin. Their skin needs to stay moist to allow the passage of dissolved oxygen into their bloodstream.
2. Earthworm skin is coated with mucus, and they need to live in a humid, moist environment.

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Answer 2

• Breathing in Earthworms

Earthworms are found in the soil. In the soil they eat dead and decaying organic matter along with soil. In return, they help in aeration of soil by digging holes in it and enhance fertility of soil. In earthworms there is no specialized organ to do respiration. So, in earthworms respiration process takes place through its moist, thin and highly vascular skin. The oxygen gas absorbed by the skin diffuses into the blood and transported to all the cells of the body. In the cells, oxygen is used up for oxidation of food. During this process, carbon dioxide is produced. Then, this carbon dioxide mixes in the blood and diffused out of the body through its moist skin.