Polyp phase is absent in

Question

Polyp phase is absent in (A) Physalia (B) Obelia (C) Hydra (D) Aurelia

Tardigrade Admin · Accepted Answer

Development of Aurelia does not show true alternation of generations or metagenesis. In Aurelia medusa is formed by the metamorphosis of an ethyra larva. It has a dominant medusoid phase and a suppressed polypoid phase in its life history.

Q. Polyp phase is absent in

Physalia

Obelia

Hydra

Aurelia

Development of Aurelia does not show true alternation of generations or metagenesis. In Aurelia medusa is formed by the metamorphosis of an ethyra larva. It has a dominant medusoid phase and a suppressed polypoid phase in its life history.