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Question

The main function of clitellum is

A
Coccon formation
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B
Locomotion
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C
Excretion
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D
Copulation
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Solution

The correct option is B Coccon formation
The clitellum is part of the reproductive system. The clitellum is a thick, saddle-like ring found in the epidermis (skin) of the worm, usually with a light-coloured pigment. To form a cocoon for its eggs, the clitellum secretes a viscous fluid. The main function of clitellum is cocoon formation. In earthworms, the clitellum can only be seen when the worm is sexually mature.
So, the correct answer is 'Cocoon formation'

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