EVERYDAY SCIENCE

Detailed explanation-1: -Earthworms have two sets of muscles-circular muscles in each segment and longitudinal muscles running along the whole length of the body. Continuous expansion and contraction of these muscles help them to move. Additional structures called chaetae also help them in locomotion .

Detailed explanation-2: -An earthworm moves by using two different sets of muscles. Circular muscles loop around each segment, and longitudinal muscles run along the length of the body. When the circular muscles contract, the earthworm stretches, becoming longer and thinner.

Detailed explanation-3: -An earthworm is divided into segments. Each is filled with liquid, and each has its own set of muscles. Long muscles run along the sides of each segment, and circular muscles go around each segment.

Detailed explanation-4: -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.

Detailed explanation-5: -How do earthworms move? Earthworms have groups of bristles on each segment of the body that move in and out to grip surfaces as they stretch and contract their muscles to push themselves forward or backward. They tend to move forward.