Bacteria occupy their own domain of life. The domain Eubacteria is tremendously diverse and embraces no fewer than 30 distinct phyla, according to the LSPN classification schema. Because of the eagerness with which bacteria exchange genes across species barriers via lateral gene transfers, firm classifications according to lineage are difficult to establish with certainty.Know More
Taxonomists divide life into major suborders, chiefly domain, kingdom, phylum and class. Bacteria belong to the domain Eubacteria, which is one of the three domains of life on Earth. According to Wikipedia, the old designation for bacteria, Prokaryota, can be used only to distinguish bacteria and archaeans from the plants, animals and fungi of Eukaryota and is therefore of limited value. Within Eubacteria, organisms are grouped into phyla and classes, though these levels of classification were developed for eukaryotes and cannot take into account the frequency with which bacteria trade genetic material.
Traditional lines of phylogeny begin to break down at levels below class, as bacterial "species" rarely exist in genetic isolation, notes Wikipedia. Lower-level classification thus becomes largely a matter of opinion, as the majority-similarity rule for identifying a bacterial species, if applied to mammals, would group humans, apes and monkeys together as a single "species."Learn more about Biology
In modern biology, there are three approaches to classifying organisms: systematics, cladistics and molecular evolutionary taxonomy. They are all based on organisms' relation to each other, but use different indicators to assign the degree of relationship.Full Answer >
Linnean classification is the traditional classification system of all living things. This system classifies plants and animals by body structure and a descending order of categories. These categories are kingdom, phylum, class, order, family, genus and species.Full Answer >
Paramecium caudatum is classified as a member of the Protozoa kingdom, according to the Integrated Taxonomic Information System. These organisms are further classified into the phylum Ciliophora and the class Ciliatea.Full Answer >
The five kingdoms in the classification system of life are animals, plants, fungi, prokaryotes and protoctists. Organisms are classified according to various characteristics that they share, and the kingdom classification is based on their cells. The kingdom is the first division of living organisms.Full Answer >