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Classification of Living Organisms

Classification of Living Organisms. 1.8 million species have been identified and given names. 2/3 of these animals are insects. Taxonomy. The branch of biology concerned with the classification of organisms and the relationships between them . Binomial Nomenclature.

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Classification of Living Organisms

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  1. Classification of Living Organisms

  2. 1.8 million species have been identified and given names. • 2/3 of these animals are insects

  3. Taxonomy • The branch of biology concerned with the classification of organisms and the relationships between them.

  4. Binomial Nomenclature • Current classifying system • It gives each species a two part name

  5. How to name using Binomial Nomenclature • Genus is the first part of the name • Species is the second part of name • Ex: acerrubrum • acer = genus • rubrum = species • Names must be italicized or underlined seperately.

  6. Binomial nomenclature shows relationships between organisms through their anatomy, genetics, and evolutionary ancestry.

  7. Bear Relationship Example • Black bear • Grizzly bear • Brown bear • Polar bear • Panda bears Do you think any of these bears are closely Related, if so which ones?

  8. Bear Relationship Example • ursusamericanus • ursushorribilis • ursusarctos • ursusmaritimus • Ailuropodamelanoleuca

  9. The first four bears belong to the same genus so they are closely related. • What about the panda bear?

  10. ursusamericanus • ursushorribilis • ursusarctos • ursusmaritimus • Ailuropodamelanoleuca • All of these bears belong to the same family ursidae. Therefore, the panda bear is a distant relative.

  11. Levels of Classification (Taxa) • Kingdom • Phylum • Class • Order • Family • Genus • species

  12. Which level of the classification system is more specific? General?

  13. Complete Examples Classify these organisms • Dandelion • Housefly • human

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