How is oxygen transported in earthworm?
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Answer:
earthworms skin help them to breathe.
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Explanation:
The earthworm has a cavity filled with blood known as Haemocoel. The body cavity does not have an extensive network of blood vessels. The oxygen enters the body through moist skin. They don't have any special respiratory organs.
The oxygen diffuses in the blood through the moist skin and mixes with the hemoglobin in the Haemocoel. The carbon dioxide diffuses out through the skin by diffusion. They have an incomplete respiratory and circulatory systems.
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