Question

Locomotion is facilitated in an earthworm by ________.​

Answer 1

Answer:

setae

Explanation:

An earthworm moves using circular and longitudinal muscles, as well as bristles called setae. The earthworm can push the setae out of its body to grab the soil around it. To move forward, the worm uses its setae to anchor the front of its body and contracts the longitudinal muscles to shorten its body.

Answer 2

Answer:

Expansion and contraction of muscles.

Explanation:

The earthworm first fixes its reared end using bristles called setae. Then it extends its body forward. It fixes the front end and releases the rear end. Then it pushes the rear end towards the front. This continues as the earthworm eats its way through soil.