Taxonomy
The class that includes sea stars.
What is Asteroidea?
The main body of an echinoderm.
What is the central disk?
The water vascular system.
(What is) a series of canals that echinoderms send water through in order to move.
The pieces of the skeleton of an echinoderm.
What are ossicles?
The class that includes sea urchins.
What is Echinoidea?
What is the cardiac stomach?
The digestive system.
The organ of an echinoderm that is most similar to the human stomach.
What is the pyloric stomach?
The class that includes brittle stars.
What is Ophiuroidea?
The "tube feet" that stick out from underneath each arm.
What are podia?
The asexual reproductive system.
(What is) when an echinoderm's arm is ripped off, either by accident or on purpose, and one or both pieces regenerate.
The hole on the dorsal side of an echinoderm used to intake water.
What is the madreporite?
The class that includes sea cucumbers and sand dollars.
What is Holothuroidea?
What are papulae?
The sexual reproductive system.
(What is) when an echinoderm spews out gametes into the ocean through the gonopores.
A gland that produces digestive juices to help with digestion.
What is a pyloric caecum?
The class that includes feather stars and sea lillies.
What is Crinoidea?
The tiny pinchers on the skin of an echinoderm.
What are pedicellariae?
The nervous system.
The bulbous structures used to hold water before being expelled out of the body for movement.
What are ampullae?