Sentence Examples with the word Cnidaria

In the development of the Hydrozoa, and indeed of the Cnidaria generally, the egg usually gives rise to an oval larva which swims about by means of a coating of cilia on the surface of the body.

POLYP, the name given by zoologists to the form of animal especially characteristic of the subphylum Cnidaria of the Coelentera.

The Hydrozoa may be defined, therefore, as Cnidaria in which two types of individual, the polyp and the medusa, may be present, each type developed along divergent lines from the primitive actinula form.