Echinoderms

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

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 
• Everting their stomach to digest prey
• Chewing their prey with jaws and teeth
• squeezing their prey until it dies

An echinoderm with soft body and a leathery covering.

• sea star

• sand dollar

• sea urchin

• sea cucumber

What is the process of regeneration?

• When an animal sheds its exoskeleton.

• When an animal can clean the ocean floor.

• When an animal can regrow a body part.

• When an animal recycles plastic bottles and cans.

One of the numerous external, fluid-filled muscular tubes of an echinoderm, such as a starfish or sea urchin, serving as organs of locomotion, food handling, and respiration.

• TUBE FEET

• aristotle's lantern

• ambulacral groove

• ampulla

Before entering the ring canal, water must pass through the...

• stone canal

• radial canals

• ampullae

• tube feet

Sand dollars and sea urchins both have mouth structures called...

• Plato's Closet.

• Aristotle's Lantern.

• Socrates' Dentures.

• Democritus' Facepalm

Tags

NGSS.MS-LS4-2

As a defense mechanism, a sea cucumber will...

• lose an appendage and regenerate it

• eviscerate

• sting prey with their tentacles

• turn its tube feet into spikes.