how does hydra breathe ??????????????
Hydra respiration belongs to phylum cnidarian.Hydra is an aquatic, multicellular animal. It has no respiratory organ. They respire by diffusion alone.
how does hydra breathe ??????????????
Hydra respiration belongs to phylum cnidarian.Hydra is an aquatic, multicellular animal. It has no respiratory organ. They respire by diffusion alone.