1 / 54

Taxonomy - PowerPoint PPT Presentation

  • Uploaded on

Taxonomy. The science of classifying organisms . Classify To arrange according to similarities or differences. Why classify?. Biologists use classification to organize living things into groups so that the organisms are easier to study. We classify to make our lives easier.

I am the owner, or an agent authorized to act on behalf of the owner, of the copyrighted work described.
Download Presentation

PowerPoint Slideshow about ' Taxonomy' - elkan

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.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.

- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -
Presentation Transcript


The science of classifying organisms.


To arrange according to similarities or differences.

Why classify
Why classify?

Biologists use classification to organize living things into groups so that the organisms are easier to study.

We classify to make our lives easier.


  • Simple classifications

  • Used common names

  • Plant or animal?

  • If an animal does it have blood?

    does it

    • Fly

    • Swim

    • Walk/Crawl

  • DISCUSSION QUESTION - Using Aristotle's 3-group system (based on movement), name 2 animals that would fit each of the 3 groups.

Problems with this system
Problems with this system?

Some animals can walk, swim, and fly

Carolus linnaeus 1700s
Carolus Linnaeus 1700s system?

  • Described organisms with two word names, instead of polynomials

  • Developed binomial nomenclature

  • First word = Genus name (Capitalized)

  • Second word = species name (lowercase)

    scientific name

    • Example Canis lupus

      Always italicized or underlined

Why binomial nomenclature
Why binomial nomenclature? system?

  • Binomial - 2 name

  • Nomenclature – naming system

  • Much easier than a 10+ word name under old “polynomial system”

  • Same name no matter where you go (Latin)

  • Less confusion

Devil Cat system?

Ghost Cat system?

Mountain Lion system?

Screaming Cat system?

Puma system?

Cougar system?

Taxonomic hierarchy
Taxonomic Hierarchy system?

  • Names organisms and their relationships from very broad to very specific

Milky way solar system earth u s ohio westerville mainsail dr 283
Milky way system?Solar SystemEarthU.S.OhioWestervilleMainsail Dr.283

Domain kingdom phylum class order family genus species
Domain system?KingdomPhylumClassOrderFamilyGenusSpecies

Three domains of life
Three Domains of Life system?

There used to be 2, why do you think there are 3 now?

Domain system?Archaeabacteria: Life's Extremists...! Archaea are found in the harshest environments on Earth, and are the oldest known organisms on Earth, appearing in the fossil record over 3.6 BILLION years ago (3,600,000,000 years ago!)

Domain Bacteria (or Eubacteria): system?

is familiar to most people when associated with human or animal disease. However, most bacterial species do not (and cannot) cause disease.

Most species even play beneficial roles for humans by producing antibiotics and food.

Domain Eukarya system?

A single-celled or multicellular organism whose cells contain a distinct membrane-bound nucleus.

(Organism’s cell has a nucleus.)

Domain kingdom phylum class order family genus species1
Domain system?KingdomPhylumClassOrderFamilyGenusSpecies

Pro = before system?

Why has taxonomy changed throughout history? system?

Do you think it will continue to change?

Prokaryotes system?

  • We are now filling out our charts

Archaea system?

  • Unicellular prokaryotes

  • Autotrophs

  • Cell wall

Eukaryotes system?

Eu = true

Have membrane bound nuclei

Phylum examples
Phylum examples system?

  • Chordata Cord Chordates Hollow dorsal nervous chord, notochord, pharyngeal slits, endostyle, post-anal tail about 100,000+ Cnidaria Stinging nettle Coelenterates Nematocysts (stinging cells) about 11,000 Ctenophora Comb bearer Comb jellies Eight "comb rows" of fused cilia about 100 modern species Cycliophora Wheel carrying Symbion Circular mouth surrounded by small cilia

Classification of humans
Classification of Humans system?

  • Kingdom Animalia

  • Phylum Chordata

  • Class Mammalia

  • Order Primates

  • Family Hominidae

  • Genus Homo

  • Species sapiens

Is your table filled out

Is your table filled out? system?

Don’t lose it!!!