Question

Muscles produce movement by contracting. Many invertebrates that lack exoskeletons have either one or two types of muscles responsible for movement. Longitudinal muscles shorten or flex the body when they contract. Circular muscles constrict the body. Circular muscles often produce waves of contraction that move along the body.

Which type or types of muscles do vinegar eels have? How do you know?

Answer 1

Vinegar eels (Turbatrix aceti) is a nematode that can be found in the vinegar culture. They move in a whip like motion. They have only longitudinal muscles which flexes when they contract. They doesn't have circular muscles as their body doesn't constrict.