Echinoderms

What type of echinoderm has flexible arms that are easily broken to escape predators:

• Brittle stars

• Sea stars

• Sea cucumbers

• Sea urchins

Sea stars belong to what Phylum?

• Invertebrata

• Arthropoda

• Nematoda

• Echinodermata

How do most star fish get their food?

• Filter feeding

• Scavenging

• Predation of small animals

• Eating plants and algae

Which echinoderm is grouped with a sea urchin?

• sea cucumber

• sand dollar

• sea star

• brittle star

Tags

NGSS.MS-LS4-2

An echinoderm that has a large number of spines attached to it is probably a:

• sand dollar

• brittle star

• sea star

• sea urchin

Ring canals and radial canals are both part of the ______ system.

• circulatory

• water vascular

• muscular

• digestive

The process of regrowing body parts is called

• regeneration

• homeostasis

• vasculation

• biodiversity

A "keystone" species is often a(n)

• top predator

• endangered species

• dominant species

• important for maintaining biodiversity

Tags

NGSS.MS-LS2-2

NGSS.MS-LS2-4

NGSS.MS-LS2-5

The word "echinoderm" means

• big foot

• spiny skin

• tube foot

• hairy toe