Chapter 28 ( College Biology) Vocabulary

Coelom

The body cavity in Mollusks

Visceral Mass

The central section of a mollusk’s body that contains the mollusk’s organs

Mantle

A layer of tissue that covers the body’s many invertebbrates

Shell

Secreted by the mantle

Foot

An appendage that some invertebrates use to move

Radula

A rasping, tongue-like organ that is covered with teeth and that is used for feeding

Nephridia

A tiny tubular structure

Trochophore

A free-swimming, ciliated larva of many worms and more mollusks

Gastropods

Primarily a marine group that also had members in freshwater and terrestrial habitats

Aplysia

A sea hare

Nudibranch

A sea slug with no shell

Cone snail

Venomous marine gastropods with conical shells and intricate patterns

Cephalopods

Made up of a large head attached to tentacles