Echinoderms

Most echinoderms have an open circulatory system.

• true

• false

Sand dollars have radial symmetry.

• true

• false

A brittle star uses its flexible arms for movement.

• true

• false

The symmetry exhibited by echinoderms is

• bilateral

• spherical.

• radial.

• asymmetrical

What echinoderm is this?

• sea lily 

• sea urchin 

• sea cucumber 

• sand dollar 

Tags

NGSS.MS-LS4-2

What echinoderm is this? 

• sand dollar

• sea urchin 

• sea star

• sea cucumber

What does the term echinoderm mean?

• tube feet

• star shaped

• spiny skin

• stomach foot

Tags

NGSS.MS-LS4-2

These structures resemble long suction cups, and are part of the water vascular system.

• stomach

• radial canals

• tube feet

• mouth

How does an echinoderm use its water vascular system?

• To move and capture food

• To sense when food is near

• To defend itself against predators

How do most Echinoderms get their food?

• They are filter feeders.

• They are scavengers.

• They are predators.