Algae | Definition, Characteristics Examples - Study. com Algae are eukaryotic, photosynthetic, unicellular, or multicellular organisms They are not true plants and are generally found living in aquatic or moist habitats Why are algae formed?
Bacteria Overview, Characteristics Infection - Study. com Five characteristics of bacteria include being unicellular, prokaryotic, microscopic, lacking a nucleus, and having a plasma membrane These traits are shared by all bacteria
Euglena | Characteristics, Structure Life Cycles - Study. com Euglena are unicellular microorganisms in the kingdom Protista, also referred to as protists Euglena are typically found in damp and aquatic (fresh and saltwater) environments Euglena blooms