1 / 10

2.2 Biologists use seven levels of classification .

2.2 Biologists use seven levels of classification. Vocabulary Genus Binomial nomenclature Dichotomous key. Linnaeus named about 4000 species. Aristole- made 2 large kingdoms plant and animal based where they live

ldwayne
Download Presentation

2.2 Biologists use seven levels of classification .

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. 2.2 Biologists use seven levels of classification. • Vocabulary • Genus • Binomial nomenclature • Dichotomous key

  2. Linnaeus named about 4000 species. • Aristole- made 2 large kingdoms plant and animal based where they live • Carlous Linnaeus – developed system for naming and organizing plants and animalsUsed appearance to group species • 1.5 Million species named today Use physical and genetic evidence to name species today

  3. Naming Species • Genus – group of species that have similar characteristics • Members of a genus are closely related • Ex. Ursus –bears • Ursus americanus • Ursus maritimus

  4. Naming Species • Binomial nomenclature • Linnaeus developed • Binomial means two names • Nomenclature means list of names • A system of naming something using two names or words • Most terms are Latin • Describe characteristics • Gracilis- graceful-slender • Chamaeleo gracilis,Prinia gracilis,Psathyrella gracilis

  5. Using Scientific Names • Help to avoid errors in communication • Organisms with similar evolutionary history are group together • Allows information to be organized and easily found • Descriptive information about species • Elapheguttata, Huerniaguttata, Stephanorrhinaguttata (guttata spotted)

  6. Using Scientific Names • When naming an organism use both the genus and species name • Writing names: Genus comes first & is capitalized and in italics species name comes second in lower case and italics- • Both underlined when hand written Homo sapiens - humans

  7. Organisms can be classified into seven levels. Kingdom Phylum Class Order Family Genus Species

  8. Organisms can be classified into seven levels. • Kingdom- contains most species-similar evolutionary history • As the organism gets closer to the species level they share more or fewer characteristics. • Genus- closely related • Species- most specific-fertile offspring

  9. Dichotomous keys and field guides help people identify organisms. Dichotomous Key- a tool to help identify organisms May not use scientific names asks a series of questions that can only be answered in two ways. Answers to questions lead you to another two question that narrow down the list of organisms

  10. Dichotomous keys and field guides help people identify organisms. • Field Guides- contain descriptions, photographs, pictures, and paintings to aid in identification of organisms • Range maps • Scientific names

More Related