| Term | Definition |
| species | a group of similar organsims |
| taxonomy | the science of classifying organsims into groups |
| artifical classification system | a system of organization based on apperance |
| binomial nomenclature | two name naming system |
| classify | set up categories by similar characteristics |
| identify | deciding which category a organism belongs to |
| biological key | an arrangement of descriptions and illustrations used to identify an organism |
| natural classification system | a system of organization based on similarities |
| ecotype | organisms that appear the same but are suited for one environment rather than another and often cannot interbreed |
| genus | a group of organisms |
| variety | different types of breeds |
| Aristotle | the first person to attempt to classify organisms with a system based on apperance |
| Cardus Linnaeus | the person who suggested the classification and naming system used today |
| 1st general rule | sublevels |
| 2nd general rule | various characteristics that all levels under group possess |
| 3rd general rule | divison of a group on level #1 to several groups on level #2 |
| 1st kingdom | Monera |
| 2nd kingdom | Protista |
| 3rd kingdom | Fungi |
| 4th kingdom | Plantae |
| 5th kingdom | Animalia |