| A | B |
| classification | is the arrangement of organisms into orderly groups based on similarities. |
| kingdom | the most general of the seven levels of classification. |
| phylum | the level of classification after kingdom; the organisms from all kingdoms are sorted into phyla. |
| class | the level of classification after phylum. |
| order | the level of classification after class. |
| family | the level of classification after order. |
| genus | the level of classification after family. |
| species | the most specific of the seven levels; a group of organisms that can mate & produce offspring. |
| taxonomy | the science of identifing, classifying, and naming living things. |
| dichotomous key | an aid to identify unkown organisms that consists of several pairs of descriptive statements. |