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Chap. 17 : Organizing Life I. Taxonomy - classification system of livng things based on a) structural b) chemical c) genetic d) behavioral and e) evolutionary relationships A. Why have a classification system ? 1. To see how much alike or different organisms are 2. To better understand organisms 3. To have a universal system and get rid of common names. Ex. Polecat, jellyfish, wooly bear B. Taxonomists 1. Aristotle – divided living things into 2 groups : plant and animal Plant herbs shrubs trees Animal land air water 2. Carl Linnaeus – Father of Taxonomy --- made up the system of binomial nomenclature (2-word naming system that makes up an organism’s scientific name) --- Scientific name = Genus + species (derived from latin) C. Classification System -Dancing kings play chess on fine green stools. -- Dumb king Phillip came over from Glasgow, Scotland. 1. Domain a. Bacteria – prokaryotic, true bacteria ex. Strept, e.coli b. Archae – ancient bacteria c. Eukarya – eukaryotic cells. Plants, animals, fungi,protist 2. Kingdom – 6 total a. Eubacteria - true bacteria b. Archeabacteria – bacteria of extremes c. Protista – one-celled usually, water environments, eukaryotes, ex. Amoebas, paramecium, euglena, algae. d. Fungi – multicellular, feed off dead things, ex. Mushrooms, mold, mildew, ring worm e. Plantae – trees, flowers f. Animalia – us 3. Phylum- called divisions in plants 4. Class 5. Order 6 Family 7. Genus 8. species – can interbreed and produce a viable offspring. -- race – subgroup of a species. Breeds in dogs Zonkey Liger – dad lion mom tiger Tigon – dad tiger mom lion D. Human Classification Domain - Eukarya Kingdom – Animalia Phylum - Chordata – backbone Class – Mammalia – produce milk Order – Primate – have opposable thumb Family – Hominidae – walk upright Genus – Homo – highly developed brain Species – sapiens – modern man