Question

20
an organism that is considered part of the cnidaria phylum is _.
sea star
zooplankton
jellyfish
perch

Explanation:

Cnidaria is a phylum in the animal kingdom. Jellyfish are well - known members of this phylum. They have characteristic features like cnidocytes (stinging cells). Sea stars belong to the phylum Echinodermata. Zooplankton is a very broad category that includes many different organisms from various phyla. Perch is a fish and belongs to the phylum Chordata.

Answer:

jellyfish