1. Unit #7

2.  Classification – define, reasons, history, and system  Archaebacteria (Archaea)-characteristics and examples  Eubacteria – characteristics and examples  Kingdom Protista – characteristics and examples (algae and protozoa)  Kingdom Fungi – characteristics and examples

3.  What is it? ◦ Grouping of things according to similar characteristics  Why do we do it? ◦ Easier to study ◦ Easier to find things ◦ Easier to compare things

4.  Aristotle – 400 BC; Greek  Observed things based on appearance, behavior, and movement. ◦ Made three groups  Fly  Swim  Walk – Crawl – Run  He noticed that his groups contained organisms with a wide variety of differences ◦ So he subdivided

5.  Linnaeus – 1750’s (Swedish) ◦ Based his system only on observable features ◦ Called BINOMIAL NOMENCLATURE  Still used today  Modern Classification ◦ System used today is based on Linnaeus’ system as well as:  Microscopic structure  Chemical analysis  DNA (showing evolutionary relationships)

6.  Seven Levels (example is human) ◦ Kingdom - Animal ◦ Phylum - Chordata ◦ Class - Mammalia ◦ Order - Primate ◦ Family - Homonidae ◦ Genus - Homo ◦ Species - sapien