what are kingdoms and domains?
before Linnaeus, plants and animals were considered separate Kingdoms dividing the physical world into the plant, animal and mineral kingdoms. Domains are a relatively new grouping.
Taxonomy (biology)
Well before Linnaeus, plants and animals were considered separate Kingdoms. Linnaeus used this as the top rank, dividing the physical world into the plant, animal and mineral kingdoms. As advances in microscopy made classification of microorganisms possible, the number of kingdoms increased, five- and six-kingdom systems being the most common.

Domains are a relatively new grouping. First proposed in 1977, Carl Woese's three-domain system was not generally accepted until later
in the modern classification system birds are in a separate UNANSWERABLE what is this term mean? It means the conception, naming, and classification of groups of organisms. who is the founder of this system? Swedish botanist Carl Linnaeus. who is the aforementioned person? He was a Swedish botanist, zoologist, and physician who formalised binomial nomenclature, the modern system of naming organisms. He is known as the "father of modern taxonomy". what is this nomenclature mentioned above? Binomial nomenclature ("two-term naming system"), also called nomenclature ("two-name naming system") or binary nomenclature, is a formal system of naming species of living things by giving each a name composed of two parts, both of which use Latin grammatical forms, although they can be based on words from other languages. how are binomial names derived at? The two parts of a binomial name can each be derived from a number of sources, of which Latin is only one. who are some of the early taxonomists? UNANSWERABLE how are plants and animals classified under modern system of classification? UNANSWERABLE what was the significance of the linnaean era? It served as the "starting point" for valid names (at 1753 and 1758 respectively).
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Taxonomy (biology) [SEP] Kingdoms and domains
A small number of scientists include a sixth kingdom, Archaea, but do not accept the domain method. Thomas Cavalier-Smith, who has published extensively on the classification of protists, has recently proposed that the Neomura, the clade that groups together the Archaea and Eucarya, would have evolved from Bacteria, more precisely from Actinobacteria. His 2004 classification treated the archaeobacteria as part of a subkingdom of the kingdom Bacteria, i.e., he rejected the three-domain system entirely. Stefan Luketa in 2012 proposed a five "dominion" system, adding Prionobiota (acellular and without nucleic acid) and Virusobiota (acellular but with nucleic acid) to the traditional three domains.