Animals Quiz #2

In addition to radial symmetry, echinoderms have a water-vascular system.

• True
• False

In some echinoderms, respiration and waste removal are performed by skin gills.

• True
• False

Starfish digest food inside and outside there body.

• True
• False

The symmetry exhibited by echinoderms is

• bilateral
• spherical.
• radial.
• mirror image.

Echinodermata means

• spiny skin
• five limbs
• skin gills
• tentacles surrounding mouth

What allows water to enter the water vascular system?

• tube feet
• mouth
• ampulla
• madreporite

What are these?

• Mouth
• Anus
• Madreporite
• Tube foot

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

• water vascular system
• nervous system
• notochord
• ampulla

Tiny pincers that surround the spines that help keep foreign objects off the sea star are called ________

• tube feet
• pedicellariae
• madreporite
• ampulla 

The bulblike sac on the top of each tube foot is the _____

• ampulla
• pedicellariae
• madreporite
• nerve ring