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

The larva of echinoderms have _____ symmetry.

• Asymmetrical
• Bilateral
• Radial
• None

Echinoderms have an internal skeleton and a system of fluid-filled tubes called a(n)...

• water vascular system
• nervous system
• notochord
• ampulla

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

Where does fertilization occur with sea stars?

• internal
• external

What phylum do echinoderms belong to?

• Cnidaria
• Porifiera
• Echinodermata
• Chordata

The skeleton of echinoderms is made of

• Water
• Cartilage
• Calcium
• silica 

Which is an example of an Asteroidea member?

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

Which is an example of an Ophiuroidea member?

• basket star
• sea lily
• sea cucumber
• sea star