Alga reproduces asexually during the gastrodermal cells and you may an individual hydra can get include about 150,100 algal cells
Marine sponges include different endosymbionts, along with bacteria, dinoflagellates, diatoms, and you may cryptomonads. Symbionts are especially frequent among exotic sponges. Of a lot sponges include endosymbiotic cyanobacteria that are intercellular (from inside the sponge muscle). (more…)