Echinoderm Review

Which of the following is not an echinoderm?

• sea star

• sea slug

• sea urchin

• sea cucumber

What kind of symmetry do Echinoderms have?

• radial

• bilateral

What is the class of sea stars?

• crinoidea

• ophiuroidea

• echinoidea

• asteroidea

What does "regeneration" mean?

• able to come back to life

• able to regrow limbs

• able to lose internal organs

• able to turn stomach inside out

What is sea star skin made out of?

• calcium carbonate

• rubber

• plankton

• they have an external shell

What part of the sea star help it to move along the sea floor?

• ampullae

• central disc

• madreporite

• tube feet

How do sea stars eat?

• they use a radula to scrape their food off of rocks

• they turn their stomach inside out and use digestive enzymes to start digesting food.

• they use their powerful beak to chomp on their prey

• they do not need to eat

What part of the sea star does water enter into the water vascular system?

• tube feet

• stomach

• madreporite

• radial canal

Where are the eye spots located on a sea star?

• At the end of each arm

• on the bottom of the tube feet

• just above the madreporite

• inside the stomach

What type of fertilization do echinoderms have?

• internal fertilization

• external fertilization