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Structural Organisation in Animals — BIOLOGY STD 11 Science — Question

Gujarat BoardEnglish MediumSTD 11 ScienceBIOLOGYStructural Organisation in Animals1 Mark
Question
What are annuli in earthworms and what is their function?
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Answer

The body of earthworm bears a series of circular grooves called the annuli. The annuli divide the body into 100-120 small parts termed as segments or metameres.

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