Echinoderms

What does the term echinoderm mean?

• tube feet
• star shaped
• spiny skin
• stomach foot

What type of symmetry do adult echinoderms exhibit?

• Asymmetry
• Pentaradial symmetry
• Bilateral symmetry
• Trilateral symmetry

What echinoderm is this? 

• sand dollar
• sea urchin 
• sea star
• brittle star

Tags

NGSS.MS-LS4-2

Echinoderms have an internal skeleton and a system of fluid-filled tubes called a(n)...

• water vascular system
• nervous system
• notochord
• ampulla

Sea stars feed by

• Injecting poison that digests the prey 
• Everting their stomach to digest prey
• Chewing their prey with jaws and teeth
• squeezing their prey until it dies

The nerve that runs down each arm of a starfish is the _____

• nerve ring
• stone nerve
• radial nerve
• ampulla

What type of skeleton do echinoderms have?

• Exoskeleton
• Hydrostatic skeleton
• Endoskeleton
• Mesenteric skeleton

Echinoderms have no head or brain.

• True

• False

Tags

NGSS.MS-LS4-2

Which is not an example of an echinoderm.

• sea urchin

• sea star

• sea cucumber

• sea foams

Starfish store their tube feet in this

• Lateral Canals

• Ring Canals

• Stone Canals

• Ambulacral Grooves