Which of the following is responsible for excretion in earthworm?

Simple diffusion

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Nephridia

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Malphigian tubules

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Flame cells

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Solution

The correct option is B Nephridia
Earthworm belongs to phylum Annelida. Phylum Annelida includes bilaterally symmetrical, triploblastic, truly coelomate and metamerically segmented animals with their body covered with a thin flexible cuticle. In earthworm, organs of excretion are metamerically repeated nephridia which are ectodermal in origin. Hence, option B is the correct answer.

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