Q: What process takes place when echinoderms release their gametes into the water?


Read this paragraph and choose the correct option from the provided answers:

The echinoderm nervous system has a nerve ring at the center and five radial nerves extending outward along the arms. There is no centralized nervous control. Echinoderms have separate sexes and release their gametes into the water where fertilization takes place. Echinoderms may also reproduce asexually through regeneration from body parts.

 Choices:

- migration

- stimulation

- isolation

- fertilization


A:
fertilization