sci 10

Which of the following is not an echinoderm?

• Sea cucumber

• Clam

• Sea star

• Sea urchin

What is the main characteristic of echinoderms' bodies?

• Bilateral symmetry

• Three-point radial symmetry

• Five-point radial symmetry

• Four-point radial symmetry

What is the main food source for most echinoderms?

• Small fish

• Plants

• Plankton

• Microorganisms

Which group of mollusks includes snails?

• Gastropods

• Univalves

• Bivalves

• Cephalopods

What is the main function of the shell for snails?

• Assistance in movement

• Regeneration of body parts

• Protection against predators

• Sensing the environment