In microbiology, flora (plural: floras or floræ) refers to the collective bacteria and other microorganisms in an ecosystem (usually an animal host or a single part of its body). Microbiology is the study of microorganisms, which are unicellular or cell-cluster microscopic organisms. ... Look up Plural in Wiktionary, the free dictionary Plural is a grammatical number, typically referring to more than one of the referent in the real world. ... Subgroups Actinobacteria Aquificae Bacteroidetes/Chlorobi Chlamydiae/Verrucomicrobia Chloroflexi Chrysiogenetes Cyanobacteria Deferribacteres Deinococcus-Thermus Dictyoglomi Fibrobacteres/Acidobacteria Firmicutes Fusobacteria Gemmatimonadetes Nitrospirae Planctomycetes Proteobacteria Spirochaetes Thermodesulfobacteria Thermomicrobia Thermotogae Bacteria (singular: bacterium) are a major group of living organisms. ... E. coli magnified 10,000 times. ... In ecology, an ecosystem is a combination of all the living and non-living elements of an area. ... Phyla Subregnum Parazoa Porifera (sponges) Subregnum Agnotozoa Placozoa (trichoplax) Orthonectida (orthonectids) Rhombozoa (dicyemids) Subregnum Eumetazoa Radiata (unranked) (radial symmetry) Ctenophora (comb jellies) Cnidaria (coral, jellyfish, anemones) Bilateria (unranked) (bilateral symmetry) Acoelomorpha (basal) Orthonectida (parasitic to flatworms, echinoderms, etc. ... With regard to living things, a body is the integral physical material of an individual, and contrasts with soul, personality and behavior. ...