Setae help in the locomotion in earthworm but are not uniformly present in all the segments. Select among the following that represents setae.

20th-22nd segment

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Last segment

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1st segment

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Clitellar segment

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Solution

The correct option is A
20th-22nd segment

Setae are S-shaped, embedded in the epidermal pits present in the middle of each body segment. They are absent in the first, last and clitellar segment.

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