Polymorphic cnidarians are the members of the class

Q. Polymorphic cnidarians are the members of the class
A. Hydrozoa
B. Scyphozoa
C. Actinozoa
D. None of these
Answer: Hydrozoa

A. Hydrozoa
B. Scyphozoa
C. Actinozoa
D. None of these
Answer: Hydrozoa