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CLASSIFICATION

CLASSIFICATION. Chapter 17. What is Classification??. Classification is the arrangement of organisms into orderly groups based on their similarities . Classification is also known as taxonomy. A person who identifies and names organisms is known as a Taxonomist.

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CLASSIFICATION

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  1. CLASSIFICATION Chapter 17

  2. What is Classification?? • Classification is the arrangement of organisms into orderly groups based on their similarities. • Classification is also known as taxonomy. • A person who identifies and names organisms is known as a Taxonomist.

  3. Why do we Classify Organisms? • To have accurate and universal names for organisms (regardless of what language you speak). • Prevents the mis-naming of organisms (such as starfish and jelly fish which are not really fish!!

  4. History of Classification -Boring old people, yeah!! • Aristotle was the first official taxonomist 2000 years ago. • He divided organisms into two categories - plants and animals • He then subdivided them based on their habitat(land, sea, air), • And by their morphology (the way they look).

  5. Problems with Aristotle's System • Species are not unchanging • Did not account for evolutionary relationships among organisms • Some organisms did not fit easily • Frogs live on land and in water

  6. Carolus Linnaeus • 18th century taxonomist • Called the “Father of Taxonomy” • Based his classification system on observable characteristics. • Developed binomial nomenclature.

  7. Binomial Nomenclature • Two-Part naming system. • First part Genus • Second part species • It is always in Latin • Capitalize Genus but NOT species • Italicize when typing; underline when writing.

  8. Today’s Classification System • Still uses all the things Aristotle and Linnaeus brought to the table. • In addition, we now know about DNA! • DNA allows us to examine how closely related organisms are to one another.

  9. Taxonomic Categories • Taxon (plural = taxa) is a category into which related organisms are placed. • There is a hierarchy of 8 groups (taxa) from broadest to most specific. • Domain, Kingdom, Phylum, Class, Order, Family, Genus, Species

  10. How to remember the order of the Taxa! • Dear • King • Phillip • Came • Over • For • Good • Soup!

  11. Turn to page 489! • ACTIVITY: Classify a giant panda, Ailuropodamelanoleuca, completely from domain to species level by referring to Figure 17.4.

  12. Answer to Activity: • Eukarya, Animalia, Chordata, Mammalia, Carnivora, Ursidae, Ailuropoda, melanoleuca

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