Zoology Chap 38 - Echinoderms

What type of symmetry do adult echinoderms have?

• radial
• bilateral
• none

Echinoderms demonstrate true cephalization

• true
• false

All sea stars have 5 arms

• true
• false

Tags

NGSS.MS-LS4-2

Which side of the sea star is the bottom side where the mouth is?

• oral
• aboral

The bulblike sac on the top of each tube foot is the _____

• ampulla
• pedicellariae
• madreporite
• nerve ring

Organ in starfish that can turn itself inside out when feeding

• pyloric stomach
• madreporite
• cardiac stomach
• digestive gland

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

• nerve ring
• stone nerve
• radial nerve
• ampulla

Which is an example of a crinoid (lily-like)? 

• brittle star
• sea lily
• sea star
• sea cucumber 

Which is an example of a Holothuroidea member? 

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

Which is an example of an Echinoidea member? 

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