Question

phylum cnidaria upwards. medusa cnidarians are free - moving and have tentacles that hang downward. these tentacles help capture prey, so the cnidocyte cells can release their toxins. they often catch protists or smaller animals. what is the name given to the stinging cells on cnidarians that are used for defense and to capture prey? cnidocytes spongocytes spicules

Explanation:

Cnidocytes are unique to cnidarians and are used for defense and capturing prey. Spongocytes are related to sponges and spicules are structural elements in sponges and some other organisms, not stinging cells of cnidarians.

Answer:

A. cnidocytes