Сiliates infusoria stentor polymorphic moves by flagella. protozoa microorganisms

animalcules aquatic benthic benthos biology ciliate filterfeeding filtration flagella form freshwater heterotrophic hornshaped infusoria lake life macro microorganism microorganisms microscope moves nature polymorphic pond proto protozoa protozoan research river science sedentary stentor stream trumpet underwater wildlife zooplankton iliates