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Structural Organisation in Animals — BIOLOGY STD 11 Science — Question

Rajasthan BoardEnglish MediumSTD 11 ScienceBIOLOGYStructural Organisation in Animals1 Mark
Question
How does clitellum help in forming egg case or cocoon in earthworm?
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Answer

The clitellum secretes a fluid which on exposure to air gets harden to form an egg case or cocoon.

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