ECHINODERMS

Sand dollars belong to which class of Echinoderms?

• Crinoidea

• Holothuroidea

• Echnoidea

• Asteroidea

Brittle Stars belong to which class of Echinoderms?

• Ophiuroidea

• Echinoidea

• Crinoidea

• Asteroidea

The phylum name Echinodermata means..

• spiny star

• body in 5 parts

• pointed skeleton

• spiny skin

Which of the following is not a function of the tube feet?

• gas exchange

• locomotion

• excretion of nitrogenous wastes

• feeding

A starfish can regenerate an entire body from which of the following

• the tip of an arm.

• one arm and at least 1/5th of the central disk.

• one entire arm.

• none of the answers is correct.

Which of the following belongs to the same taxonomic class as the sea urchins?

• basket stars

• feather stars

• sand dollars

• sea cucumbers

Tags

NGSS.MS-LS4-2

Which of the following echinoderms repels enemies by expelling a portion of its “guts”?

• ssand dollars.

• sea cucumber.

• sea stars.

• sea urchins.

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

Which is an example of an Asteroidea member?

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

The nerve that runs down each arm of a starfish is the _____

• nerve ring
• stone nerve
• radial nerve
• ampulla