Echinoderm Quiz

Which of the following is a characteristic feature of echinoderms?

• Bilateral symmetry

• Radial symmetry

• Segmented body

• Exoskeleton

What is the primary function of the water vascular system in echinoderms?

• Digestion

• Respiration

• Locomotion

• Reproduction

Which of the following is NOT a type of echinoderm?

• Starfish

• Sea urchin

• Jellyfish

• Sea cucumber

What is the name of the structure that echinoderms use to capture and eat their prey?

• Tentacles

• Tube feet

• Radula

• Beak

Which echinoderm is known for its ability to regenerate lost arms?

• Sea urchin

• Starfish

• Sand dollar

• Sea lily

Which of the following echinoderms is known for its spikey exterior?

• Sea cucumber

• Starfish

• Sea urchin

• Brittle star

How do sea cucumbers primarily feed?

• Filter feeding

• Grazing on algae

• Scavenging debris

• Hunting small fish

What is the term for the small, pincer-like structures found on the surface of some echinoderms?

• Pedicellariae

• Spicules

• Cilia

• Setae

Which echinoderm is known for its ability to excrete internal organs as a defense mechanism?

• Sea urchin

• Starfish

• Sea cucumber

• Brittle star

What is the main component of the endoskeleton in echinoderms?

• Chitin

• Calcium carbonate

• Silica

• Collagen