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Classification

Classification. 18.1 Finding Order in Diversity. Why Classify?. To study the diversity of life, biologists use a classification system to name organisms and group them in a logical manner. Taxonomy . Assigning Scientific Names. Common names can be confusing and vary between regions.

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Classification

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  1. Classification 18.1 Finding Order in Diversity

  2. Why Classify? • To study the diversity of life, biologists use a classification system to name organisms and group them in a logical manner. • Taxonomy

  3. Assigning Scientific Names • Common names can be confusing and vary between regions. • Scientists agreed to use Latin and Greek when assigning scientific names to organisms. • This practice is still followed today as new organisms are discovered.

  4. Binomial Nomenclature • Two-word naming system used in differentiating a species • Genus species • A genus is a group of related species. • Ursusarctos • Ursusmaritimus

  5. Linnaeus's System of Classification • Includes seven levels- from smallest to largest • Species, Genus, Family, Order, Class, Phylum, Kingdom • Each level is called a taxon.

  6. Linnaeus's System of Classification • Family • Genera that share many characteristics • Ursidae • UrsidaeUrsusarctos • UrsidaeUrsusmaritimus • UrsidaeAiluropodamelanoleuca

  7. Linnaeus's System of Classification • Order • Broad taxanomic category composed of similar families • Carnivora • Canidae • Felidae • Ursidae

  8. Linnaeus's System of Classification • Class • Composed of similar orders • Mammalia • Includes animals that are warm blooded, have body hair, and produce milk for their young.

  9. Linnaeus's System of Classification • Phylum • Includes many different organisms that share important characteristics • Chordata • Mammalia • Aves • Reptilia • Amphibia • Several classes of fish

  10. Linnaeus's System of Classification • Kingdom • Largest and most inclusive level • Linnaeus started with only 2- Animals & Plants • Now, we recognize 6! • Plants, Animals, Protists, Fungi, Archaebacteria, Eubacteria.

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