Which of the Following is NOT a Cnidarian

Question

Which of the following is NOT a cnidarian?
A)Corals
B)Planaria
C)Sea anemones
D)Hydrozoa
E)Portuguese man-of-war

Accepted Answer

Planaria is not a cnidarian, it is a type of flatworm. Corals, sea anemones, and Portuguese man-of-war are all cnidarians. Hydrozoa is a class within the cnidarian phylum.