The Echinoderms

What is it called when sea cucumbers "spill their insides"?

• regeneration
• ecdysis
• evisceration
• amputation

The phylum Echinodermata includes all of the following except:

• starfish
• clams
• sand dollars
• basket stars

The rigid endoskeleton is called the

• Aristotle's Lantern
• water vascular system
• chitinous
• test

The class Crinoidea includes

• sand dollars
• basket stars
• starfish
• sea lilies

Class Asteroidea includes the

• starfish
• basket stars
• brittlestars
• none of the above

What allows water to enter the water vascular system?

• tube feet
• mouth
• ampulla
• madreporite

What carry water to the tube feet?

• radial canal
• stone canal
• ampulla
• none of the above

Which is an example of an Echinoidea member? 

• sea star
• sand dollar
• sea cucumber
• sea lilies 

Which is an example of an Asteroidea member?

• sea star
• sea cucumber
• sea urchin 
• sand dollar 

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