Echinodermata Review

The Endoskeleton is made up of small calcium carbonate plates called:

• Carapace
• Ossicles
• Spicules
• Gonads

Echinoderms are the only marine invertebrates with this type of body structure: 

• Exoskeleton
• Adductor muscles
• Spicules
• Endoskeleton 

The sieve like opening into the water vascular system on the aboral surface of a sea star is called:

• Mouth 
• Skin Gills
• Ring canal
• Madreporite 

What is the top of a sea star called?

• Oral
• Dorsal
• Aboral
• Central ring

Echinoderms exchange gases with the water through their:

• Skin gills
• Gills
• Lungs
• Nephridia

Bulbs on the tops of the tube feet that control the amount of water entering and leaving the tube feet:

• Water vascular system
• Ossicle
• Podia 
• Ampullae

Echinoderms have this type of circulatory system:

• Aboral
• Closed
• Oral
• Open

The madreporite is connected to the ring canal by which part of the water vascular system? 

• Lateral canal
• Radial canal
• Stone canal
• Nerve canal

What does Echinodermata mean?

• Hard shell
• Many arms
• Soft bodied
• Spiny skin

True or False: Pincer-like appendages used from protection and cleaning are called tube-feet...

• True

• False