The characteristic larva of phylum'Coelenterata' is

Step-by-step solution

Coelenterata (coelom + enteron) or phylum Cnidaria shows both sexual and asexual reproduction. The larval stages are planula (Obelia) and ephyra (Aurelia). Cysticercus (bladder worm) is the third larval stage seen in Taenia besides oncosphere, hexacanth (other two larval stages). Cysticercus is seen after the hexacanth released in the stomach of pig, which, goes through blood circulation and on reaching muscles get encysted in the form of bladderworm. Rhabditiform is the first larval stage in Ascaris which is forme