Euglena belongs to the domain Eukarya. This domain is characterized by organisms that have complex cells with a nucleus and membrane-bound organelles.
Many euglena species are unicellular and are classified under the kingdom Protista. They are unique because they possess characteristics of both plants and animals. For instance, euglena can perform photosynthesis like plants due to the presence of chloroplasts, allowing them to utilize sunlight for energy. However, under low light conditions, they can also consume organic matter for nourishment, which is more typical of animals.
This dual ability to obtain energy highlights the versatility of euglena within the eukaryotic domain, showcasing the diverse forms of life that fall under Eukarya.