Sponge and Hydra are simple structures, almost all cells exposed directly to water waste diffuses through cell membranes in the form of ammonia for the tissue lining of the Hydra. Internal waste through excretion Cell membranes have come together in the gastrovascular then excreted in the mouth.The sponge will be scrapped. The cell membrane or the walls of the body.Hydra may be removed through the mouth or skin.
การแปล กรุณารอสักครู่..
