Echinoderms

A network of water filled canals with thousands of tubes connected to it.

• tube feet

• sea star

• water vascular system

• endoskeleton

Tags

NGSS.MS-LS2-3

NGSS.MS-LS2-4

An echinoderm with soft body and a leathery covering.

• sea star

• sand dollar

• sea urchin

• sea cucumber

Hollow thin walled tubes that each end in a suction cup

• tube feet

• tentacles

• sand dollar

• sea star

An echinoderm with fragile branched arms.

• sea star

• brittle star

• sea urchin

• sand dollar

Echinoderms have no head or brain.

• True

• False

Tags

NGSS.MS-LS4-2

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

How many species of echinoderms are living today?

• 3,000

• 4,000

• 6,000

• 5,000

What two echinoderms are able to regenerate?

• Sand dollar and sea urchin

• brittle star and sea star