👉 Pleosphaerulina is a class of unicellular protozoan bacteria that primarily inhabit freshwater and brackish water bodies, particularly lakes and rivers. They are characterized by their unique cell structure, which consists of a single ciliadic organelle called the pleospheresis apparatus, which functions to transport nutrients and waste products from the surrounding environment into the cytoplasm of the bacteria. This process is facilitated by the presence of a small membrane-bound vacuole within
