Muscles Responsible for Closing the Bivalve Shell Are

Question

Muscles responsible for closing the bivalve shell are
A)longitudinal.
B)adductors.
C)retractors.
D)circular.
E)protractors.

Accepted Answer

The muscles responsible for closing the bivalve shell are the adductor muscles. These muscles are large and powerful, and they bring the two halves of the shell together for protection and to keep the soft body of the animal inside. Longitudinal, retractors, circular, and protractors would not be able to close the shell in the same way that the adductor muscles do.