| A | B |
|---|
| Taxonomy | The branch of biology that names and groups organisms according to their characteristics and evolutionary history. |
| Linnaeus' Classification System | Kingdom, Phylum (Division), Class, Order, Family, Genus, Species |
| Species name (Scientific name) | Consists of the genus and the species identifier. |
| Species identifier | Usually a descriptive word. |
| Binomial nomenclature | A system of two-part names. |
| Varieties | Often used by botanists to split species into subsets. |
| Subspecies | Often used by zoologists to refer to variations of a species that occur in different geographic areas. |
| Phylogeny | The evolutionary history of an organism. |
| Six-Kingdom System | Includes the kingdoms of Archaebacteria, Eubacteria, Protista, Fungi, Plantae, and Animalia |
| Three-Domain System | Includes the domains Archaea, Bacteria, and Eukarya |
| Domain | Three broad groups in which all living things fit into. |
| Domain Archaea | Includes the Kingdom Archaebacteria from the six-kingdom model. |
| Domain Bacteria | Includes the Kingdom Eubacteria from the six-kingdom model. |
| Domain Eukarya | Includes the Kingdoms Protista, Fungi, Plantae, and Animalia from the six-kingdom model. |
