Ch 9 Echinoderm Test 2023

Front

What is the side of an echinoderm opposite of the mouth?

Back

Aboral

Front

What is another term for tube feet in echinoderms?

Back

Podia

Front

What is the sieve-like, disk-shaped opening on the aboral surface of the body called?

Back

Madreporite

Front

Which of the following is NOT a structure that takes the place of a brain in echinoderms: nerve ring, radial nerve, ganglia, or nerve net?

Back

Ganglia

Front

What is the side of an echinoderm that bears the mouth?

Back

Oral

Front

What is the function of the madreporite in echinoderms?

Back

It regulates water intake for the water vascular system.

Front

What are the primary functions of tube feet in echinoderms?

Back

Locomotion, feeding, and respiration.

Front

What type of symmetry do echinoderms exhibit as adults?

Back

Radial symmetry.

Front

What is the role of the nerve ring in echinoderms?

Back

It coordinates movement and sensory information.

Front

What are the main classes of echinoderms?

Back

Asteroidea (sea stars), Echinoidea (sea urchins), Holothuroidea (sea cucumbers), Crinoidea (sea lilies), and Ophiuroidea (brittle stars).