Exploring Echinoderms: A Marine Adventure

What type of symmetry do adult Echinoderms exhibit?

• Spherical symmetry

• Asymmetrical

• Radial symmetry

• Bilateral symmetry

How do sea cucumbers defend themselves from predators?

• By ejecting sticky threads

• Using sharp spines

• Camouflaging with the environment

• Swimming away quickly

What unique system do Echinoderms have for breathing and movement?

• Gill system

• Lung system

• Muscular system

• Water vascular system

Which part of the Echinoderm's body helps in regulating the water vascular system?

• Ossicles

• Tube feet

• Pedicellariae

• Madreporite

Which structure do Echinoderms use for locomotion?

• Tentacles

• Cilia

• Fins

• Tube feet

What do feather stars and sea lilies have in common?

• They are both predators

• They both attach to the seabed

• They both have sharp spines for defense

• They use arms for filter-feeding

Which Echinoderm group has a star-shaped body?

• Sea stars

• Sea urchins

• Sea cucumbers

• Crinoids

What is the primary diet of sea urchins?

• Small fish

• Coral

• Algae

• Plankton

Which Echinoderm group includes species that are primarily detritivores?

• Crinoids

• Sea stars

• Brittle stars

• Sea cucumbers

How do most Echinoderms reproduce?

• Asexually by splitting

• By laying eggs on the seafloor

• Through direct development

• By releasing gametes into the water