taxonomy l.
Download
Skip this Video
Loading SlideShow in 5 Seconds..
Taxonomy: PowerPoint Presentation
Download Presentation
Taxonomy:

Loading in 2 Seconds...

play fullscreen
1 / 12

Taxonomy: - PowerPoint PPT Presentation


  • 178 Views
  • Uploaded on

Taxonomy:. The Classification of Organisms. Why Do We Classify?. To group and name organisms logically Why not use common names? Puma Cougar Mountain lion Panther What is it? … Felis concolor. How Do We Classify?. Three methods have been used:

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

PowerPoint Slideshow about 'Taxonomy:' - lotus


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
taxonomy

Taxonomy:

The Classification of Organisms

why do we classify
Why Do We Classify?
  • To group and name organisms logically
  • Why not use common names?
    • Puma
    • Cougar
    • Mountain lion
    • Panther
    • What is it?

… Felis concolor

how do we classify
How Do We Classify?
  • Three methods have been used:
    • Traditional classification – groups based on physical similarities
    • Evolutionary classification – groups based on evolutionary history
    • Molecular classification – groups based on similarities in DNA or RNA
slide5

Appendages

Conical Shells

Crustaceans

Gastropod

Crab

Crab

Limpet

Limpet

Barnacle

Barnacle

Molted exoskeleton

Segmentation

Tiny free-swimming larva

TRADITIONAL CLASSIFICATION

EVOLUTIONARY CLASSIFICATION

the taxonomic categories
Domain …

Kingdom …

Phylum …

Class …

Order …

Family …

Genus (genera) …

Species …

Eukarya

Animalia

Chordata

Mammalia

Carnivora

Ursidae

Ursus

Ursus arctos

The Taxonomic Categories
taxon each level of organization
Which is the most inclusive taxon?

Grizzly bear

Black bear

Giant panda

Red fox

Abert squirrel

Coral snake

Sea star

KINGDOM Animalia

PHYLUM Chordata

CLASS Mammalia

ORDER Carnivora

FAMILY Ursidae

GENUS Ursus

SPECIES Ursus arctos

Taxon = each level of organization

Which is the least inclusive taxon?

the domains kingdoms

DOMAIN ARCHAEA

DOMAIN EUKARYA

Kingdoms

Eubacteria

Archaebacteria

Protista

Plantae

Fungi

Animalia

DOMAIN BACTERIA

The Domains & Kingdoms
figure 18 12 p 459

Classification of Living Things

DOMAIN

KINGDOM

CELL TYPE

CELL STRUCTURES

NUMBER OF CELLS

MODE OF NUTRITION

EXAMPLES

Bacteria

Eubacteria

Prokaryote

Cell walls with peptidoglycan

Unicellular

Autotroph or heterotroph

Streptococcus, Escherichia coli

Archaea

Archaebacteria

Prokaryote

Cell walls without peptidoglycan

Unicellular

Autotroph or heterotroph

Methanogens, halophiles

Protista

Eukaryote

Cell walls of cellulose in some; some have chloroplasts

Most unicellular; some colonial; some multicellular

Autotroph or heterotroph

Amoeba, Paramecium, slime molds, giant kelp

Fungi

Eukaryote

Cell walls of chitin

Most multicellular; some unicellular

Heterotroph

Mushrooms, yeasts

Eukarya

Plantae

Eukaryote

Cell walls of cellulose; chloroplasts

Multicellular

Autotroph

Mosses, ferns, flowering plants

Animalia

Eukaryote

No cell walls or chloroplasts

Multicellular

Heterotroph

Sponges, worms, insects, fishes, mammals

Figure 18-12, p. 459
slide10
What is the main difference between the domains Bacteria & Archaea?
  • Which domain includes only eukaryotes?
  • Which kingdom includes only organisms without cell walls?
  • Which kingdom includes Amoeba and Paramecium?
  • Which two kingdoms include heterotrophs?
  • Which kingdom includes halophiles (and thermophiles)?
  • Which kingdom includes organisms that all have chloroplasts?
binomial nomenclature
Binomial Nomenclature
  • Each species is assigned a two-part name – its “scientific name”
    • Genus (capitalized, can be abbreviated by first letter)
    • Species (not capitalized)
  • Always written in italics
  • Examples:
    • Ursus arctos (grizzly bear)
    • E. coli (a bacterium)
review
Review
  • The classification of organisms is called …
  • Why don’t scientists use common names?
  • What type of classification is based on genetic information?
  • List the eight taxonomic categories, from most inclusive to least inclusive.
  • Name the two parts of a scientific name.
  • How are scientific names written?