Classification

The sorting of living organisms into groups is known as classification.The theory and practice of biological classification into hierarchical groups is called taxonomy.The seven taxonomic groups from general to specific are:   kingdom   phylum   class   order   family   genus   speciesHierarchical classification systems are also called Linnaean classification after botanist Carl Linnaeus.Genetic studies have led many scientists to add a level of classification above 'kingdom' called the domain.