Question

What kind of skeletal system do organisms in the phylum mollusca exhibit?

Answer 1

hydrostatic skeleton

Explanation:

hydrostatic skeleton is a core of liquid (water or body fluid such as blood )surrounded by a tension resistant sheath of longitudinal and /or circular muscles.
it is similar to water filled balloon because when the force is exerted against the incompressible fluid in one region,that force can be transmitted to other regions. .