Which of the following organisms is not a Cnidarian: box jelly, hydrozoa, sea anemone, sea cucumber?

1 Answer

Sea cucumber.

Explanation:

These animals are echinoderms , they do not belong to the phylum Cnidaria.
They do not have cnidocytes.

https://encrypted-tbn0.gstatic.com/images?q=tbn:ANd9GcRVYHiIKxXw8-zsHTlOf3X-WxqtMNkDUgXyNvsFUomQvp2C3-6Chttps://encrypted-tbn0.gstatic.com/images?q=tbn:ANd9GcRVYHiIKxXw8-zsHTlOf3X-WxqtMNkDUgXyNvsFUomQvp2C3-6C