Yes but not all. Because a mantle is a hard substance that cells secret. Example: clams Hydra ,a type of cnidarian, does not have this. :)
small cnidarians and big cnidarians
cnidarians have no nervous system
Yes, cnidarians are invertebrates.
The cnidarians are in the Kindom family
Cnidarians have a radial symmetry.
cnidaria(similar to cnidarians)
Nope - Cnidarians are marine creatures !
Cnidarians reproduce asexually and sexually
They provide a habitat for Cnidarians
Cnidarians live in water.
There is none. Corals are cnidarians.
Cnidarians and Sponges are invertebrates