Superphylum Deuterostomia

Free Response

Describe the different classes of echinoderms using examples.

Hint:

The Asteroidea are the sea stars, the Echinoidea are the sea urchins and sand dollars, the Ophiuroidea are the brittle stars, the Crinoidea are the sea lilies and feather stars, the Holothuroidea are the sea cucumbers.