1 / 9

CH.17 Classification & Taxonomy

CH.17 Classification & Taxonomy. TAXONOMY. TAXONOMY: A field of biology that identifies and classifies organisms. Classification Tools: Shared characteristics Evolutionary relationships. Development of a Classification System. Carolus Linnaeus was a Swedish biologist.

zanthe
Download Presentation

CH.17 Classification & Taxonomy

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. CH.17 Classification & Taxonomy

  2. TAXONOMY • TAXONOMY: A field of biology that identifies and classifies organisms. • Classification Tools: • Shared characteristics • Evolutionary relationships

  3. Development of a Classification System • Carolus Linnaeus was a Swedish biologist. • He developed the classification system that is the basis for the system used today. • Established a system of groups called TAXA (singular: taxon) • Arranged from broadest to most specific groups • Contained 5 levels and only 2 kingdoms (Plant & Animal)

  4. Modern Classification System • Has Seven Levels • Domain - Broadest level DID • KINGDOM - KING • PHYLUM - divisions w/in the kingdom PHILLIP • CLASS - COME • ORDER - OVER • FAMILY - FOR • GENERA - (singular: genus) GOOD • SPECIES - most specific SPAGETTI - Species can interbreed and produce offspring

  5. Binomial Nomenclature • Binomial Nomenclature is “two-name naming” • It was developed by Carolus Linnaeus • It is based on Latin names (b/c Latin is not a spoken language, therefore the meanings are NOT likely to change)

  6. Scientific Name • An organism’s scientific name consists of its genus name followed by its species name • Genus first & capitalized; species second & not capitalized • BOTH WORDS MUST BE UNDERLINED OR IN ITALICS • Ex) Homo sapien or Homo sapien

  7. Dichotomous Key • Dichotomous Key: a set of paired statements that can be used to identify organisms. • Choose one statement from each pair that best fits the organism • After each choice, you are directed to the next set of statements you should use • When you have made all the choices needed, you will arrive at the name of the organism or group to which it belongs.

  8. Dichotomous Key Example(Do not copy this slide) • a. Has pseudopods ……............Amoeba b. No pseudopods………………go to #2 • a. Has a flagellum……..............Euglena b. No flagellum………………….go to #3 • a. Has cillia…............................Paramecium

  9. The Six Kingdoms • Archaebacteria • Found in extreme environments; gave rise to eukaryotes; ancestors of protists • Eubacteria • Common environments; gave rise to eukaryotic cell organelles • Protista • “catch-all kingdom”; protozoa, algae, H2O & slime molds • Fungi • Mushrooms, yeasts, & molds (have cell walls made of chitin) • Plantae • Multicellular photosynthetic organisms (mosses, ferns, flowers, & trees); have cell walls made of cellulose • Animalia • multicellular • Has about 1million known species; DO NOT PHOTOSYNTHESIZE

More Related