Hierarchy classification:

1. top of the aat hierarchies
2. Agents Facet
3. Living Organisms (hierarchy name)
4. living organisms (entities)
5. Bacteria (domain)

Anotations

Scope note:

General term for any of a large and varied group of prokaryotic, usually photosynthetic, microorganisms that contain (blue) photocyanin and (green) chlorophyll. They closely resemble eukaryotic algae in many respects, leading to past misidentification as such.