Echinoderm Notes

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

The larva of echinoderms have _____ symmetry.

• Asymmetrical
• Bilateral
• Radial
• None

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

• water vascular system
• nervous system
• notochord
• ampulla

Tags

NGSS.MS-LS4-2

Sea stars feed by

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

What phylum do echinoderms belong to?

• Cnidaria
• Porifiera
• Echinodermata
• Chordata

Which is an example of an Asteroidea member?

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

Which is an example of an Ophiuroidea member?

• basket star
• sea lily
• sea cucumber
• sea star

Tags

NGSS.MS-LS4-2

Tiny pincers that surround the spines that help keep foreign objects off the sea star are called ________

• tube feet
• pedicellariae
• madreporite
• ampulla 

Which of the following is the correct order for which water travels through the water vascular system? 

• madreporite, stone canal, ring canal, radial canal, tube feet
• stone canal, madreporite, radial canal, ring canal, tube feet 
• tube feet, radial canal, ring canal, stone canal, madreporite
• madreporite, radial canal, ring canal, stone canal, tube feet