Echinodermata review

What is one characteristic all organisms in the Echinoderm Phylum have in common?

• tube feet

• spiny skin

• venom

• both tube feet and spiny skin

What kind of skeleton do echinoderms have?

• exoskeleton

• endoskeleton

How do the echinoderms move?

• they don't, they are sessile

• through their tube feet

• by their flagella

• through water currents only

What kind of symmetry do sea stars have?

• bilateral symmetry

• radial symmetry

On what surface is the sea urchin's mouth located?

• top side

• bottom side

Do sea stars have a brain?

• yes

• no

Where is a sea star's eye spots located?

• end of rays

• by madreporite

• by central disk

• at end of ampullae

How do echinoderms devour thier prey?

• through use of venom

• through use of barbed spinelets

• through use of expelling digestive tract

• through use of oral tentacles

What is one way to tell the difference between an echinoderm and a cnidarian

• their habitat

• their symmetry

• their embryonic development

• their feeding type

The appendages of echinoderms occur in multiples of

• 2

• 4

• 5

• 8