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Classification of Living Things: A Modern Taxonomy Overview

This PowerPoint presents a compilation of internet presentations on living organisms' classification. Learn about taxonomy, binomial nomenclature, and taxonomic keys to identify organisms accurately.

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Classification of Living Things: A Modern Taxonomy Overview

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  1. This Powerpoint is a compilation of presentations found on the Internet. Unfortunately, the authors did not include their names on their work.

  2. Classification of Living Things

  3. What is classification? • Classification is the grouping of living organisms according to similar characteristics • The science of classifying organisms is known as taxonomy

  4. Early classification systems • Aristotle grouped animals according to the way they moved

  5. Kingdom Phylum Class Order Family Genus Species The modern system of classification has 7 levels:

  6. Helpful way to remember the 7 levels • Kings Play Cards On Fat Green Stools. • King Philip Came Over For Green Skittles.

  7. Binomial Nomenclature • Developed by Carolus Linnaeus • Two-name system • Each organism has a genus and a species name • First name (genus); second name (species)

  8. What rules are used to write scientific names? • An organism’s genus is always written first; the organism’s species is always written second • The genus is capitalized; the species is written in lower case • Scientific names of organisms are always italicized or underlined

  9. Using the Classification System Field guides help identify organisms. -they highlight differences between similar organisms (like trees) Taxonomic Key (Dichotomous Key) -paired statements that describe the physical characteristics of different organisms

  10. Taxonomic Key • 1a Fruits occur singly ....................................................... Go to 3 • 1b Fruits occur in clusters of two or more ......................... Go to 2 • 2a Fruits are round ....................................................... Grapes • 2b Fruits are elongate ................................................... Bananas • 3a Thick skin that separates easily from flesh .............Oranges • 3b Thin skin that adheres to flesh .............................. Go to 4 • 4a More than one seed per fruit ............................ Apples • 4b One seed per fruit ............................................ Go to 5 • 5a Skin covered with velvety hairs .................... Peaches • 5b Skin smooth, without hairs ........................... Plums What steps would you use to identify a peach?

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