How does earthworm fix its body parts to the ground?
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Explanation:
the earthworm use it's setae to anchor the front of its body in the soil now the longitudinal muscle contract and the earthworm become shorter and wider or it bends from one side to other pulling the body foreward.
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It has muscles that help to extend and shorten the body. During movement, the earthworm first extends the front part of the body, keeping the rear portion fixed to the ground. Then it fixes the front end and releases the rear end. It then shortens the body and pulls the rear end forward.
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