| A | B |
|---|
| host | an organism from which a parasite takes food or shelter |
| Taxonomy | the science of classification |
| Archaebacteria | A kingdom of single celled organisms that live in extreme or harsh environments |
| classification | A division of items or organisms into groups or classes based on specific characteristics |
| parasite | an organism that feeds on an organism of another species and that usually harms the other organism |
| Aristotle | Lived in 400 BC and divided organims into plant and animals and placed animals into three categories, those that walked, flew or swam |
| Carolus Linneaus | A Swedish scientist who developed a simple system for naming organisms and is credited for our present day classification system |
| autotroph | an organism that can make its own food |
| heterotroph | an organism that cannot make its own food and must find it or live on its food source |
| Animalia | A kingdom made uo of complex, multicellular organisms that lack cell walls, can move around and quickly respond to their environment |
| Eubacteria | A kingdom that contains all prokaryotes (single celled without a nucleus) except Archaebacteria |
| Plantae | A kingdom made up of complex, multicellular organisms that are usually green, have cell walls, cannot move around and make food by photosynthesis |
| Protista | A kingdom made up of mostly one-celled organisms that have a nucleus and are either plant like, fungus like or animal like |
| Fungi | A kingdom composed of nongreen organisms that have no means of movement and usually live on their food source |
| Dichotomous Key | An aid that is used to identify organisms and that consists of the answers to a series of questions |
