Arthropod & Echinoderm Test Review

Front

What type of symmetry do sand dollars exhibit?

Back

Radial symmetry.

Front

What is the system of fluid-filled tubes in echinoderms called?

Back

Water vascular system.

Front

What are barnacles classified as in terms of their mobility?

Back

Sessile.

Front

Do echinoderms have a head or brain?

Back

No, echinoderms have no head or brain.

Front

What is another name for the pincers or claws of arthropods?

Back

Chelipeds.

Front

What is the primary characteristic of arthropods?

Back

They have an exoskeleton.

Front

What is the function of the water vascular system in echinoderms?

Back

It helps in locomotion, feeding, and gas exchange.

Front

Name a common example of an echinoderm.

Back

Starfish (or sea stars).

Front

What is the main body plan of echinoderms?

Back

Radial symmetry.

Front

What are the small, tube-like structures used for movement in echinoderms called?

Back

Tube feet.