Echinoderms/Sea Star Review

Which of the following is responsible for controlling the movement and helps obtain food for an echinoderm?

• radial symmetry
• water-vascular system
• deuterostome development
• notochord

Which of the following is a strainer-like opening to the water-vascular system of a sea star?

• ampulla
• tube feet
• ring canal
• madreporite

What structures shown here are fluid-filled tubes used in movement, food collection, and respiration?

• pedicellaiae
• ampulla
• tube feet
• stone canal

This structure is found at the opposite end of the tube feet and forces water into the tube feet when muscles contract.

• ampulla
• pedicellariae
• madreporite
• dorsal tubular nerve cord

Which of the following is able to push their stomach out of their mouths onto their prey during feeding?

• sea urchins
• sea stars
• sea lillies
• sand dollars

Which of the following echinoderms has 5 arms, spiny skin and is typically not a food source for other marine predators?

• sea urchin
• sea daisy
• sea cucumber
• sea star

Are Echinoderms Eukaryotic?

• NO!
• I don't know
• Maybe
• Yep!

Are all echinoderms marine?

• Why would they not be
• No
• Yes
• Are they?

Which side of a Sea Star has tube feet?

• Oral side
• Aboral side

Do Echinoderms have brains?

• Yes
• No