Mollusks, Arthropods, and Echinoderms

Front

What is metamorphosis?

Back

A process in which an animal's body undergoes dramatic changes in form.

Front

What is a mollusk?

Back

An invertebrate with a soft, unsegmented body, most are protected by a hard outer shell.

Front

What organ eliminates urea, excess water, and other waste materials from the body?

Back

Kidney.

Front

What is the midsection of an insect called, to which its wings and legs are attached?

Back

Thorax.

Front

What is a stage of gradual metamorphosis that usually resembles the adult insect?

Back

Nymph.

Front

What is an arthropod?

Back

An invertebrate animal with an exoskeleton, segmented body, and jointed appendages.

Front

What is the function of gills in aquatic animals?

Back

To remove oxygen from water.

Front

What is the role of the exoskeleton in arthropods?

Back

To provide protection and support to the body.

Front

What is the primary characteristic of echinoderms?

Back

They have a hard, spiny covering and a water vascular system.

Front

What is the larval stage of a mollusk called?

Back

Trochophore.