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Nana76 [90]
4 years ago
10

Earthworms have ____ muscles that help them move.

Biology
2 answers:
valentina_108 [34]4 years ago
3 0
Earthworms have rings of circulatory muscles in each segment that help them move.
katrin [286]4 years ago
3 0

Answer:

Circulatory and Longitudinal

Explanation:

The earthworm composed of two sets of muscles which are circular and longitudinal muscles. Circular muscles are thin layers of muscles located beneath the skin and they run around the earthworm’s body. Under the circular muscles is a thicker layer of longitudinal muscles which run from anterior end to posterior end of the earthworm's body. The earthworm becomes longer and thinner on contraction of the circular muscles and when the longitudinal muscles contract the worm becomes shorter and fatter. Therefore, on alternate contracting and expanding of muscles, the earthworm moves.

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