Download From biggest to smallest: 1. Kingdom – compare to a country 2

Why classify?
•Humans
have developed classification
systems in order to make sense of the
abundant biological diversity that exists in
nature.
Taxonomy
•…the identification, naming, and
classification of species
•Taxonomists spend their time
searching for previously
unknown organisms,
determining their relationships
to known organisms, and giving
them names
Eight Levels of
Taxonomic
Classification
•
•
•
•
•
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•
Domain
Kingdom
Phylum
Class
Order
Family
Genus
Species
From biggest to smallest:
1.Domain – compare to a continent
2. Kingdom – compare to a country
3. Phylum –compare to a state
4. Class – compare to a county
5. Order – compare to a town
6. Family - compare to a neighborhood
7. Genus - compare to a street
8. Species – compare to house number
Domain, Kingdom, Phylum…what?
An easy way to remember the classification
levels:
• “ Do Kansas Predators Catch Old Furry Grey
Squirrels”
• “Does King Phillip Come Over For Grape
Soda”
Eight Levels
of Taxonomic
Classification
for the…
Grizzly
Bear
• Domain= Eukarya
•Kingdom= Animalia
•Phylum= Chordata
•Class= Mammalia
•Order= Carnivora
•Family= Ursidae
•Genus= Ursus
•Species= Ursus
arctos
Eight Levels
of Taxonomic
Classification
for the…
Dog
• Domain-Eukarya
•Kingdom-Animalia
•Phylum-Chordata
•Class-Mammalia
•Order-Carnivora
•Family Canidae
•Genus-Canis
•Species- Canis familiaris
Scientific name=
Canis familiaris
Writing Scientific Names
•The rules for writing scientific names:
• -CAPITALIZE the first letter of the genus name.
• -the species name is all lower case letters.
• -Both names must be underlined or italicized.
•Example: human = Homo sapiens
Another Example
• E. coli --Sometimes the genus
name is abbreviated.
• Escherichia coli
• Scientific Name = Rhinecanthus aculeatus
• - Hawaii – Huma Huma Nuka Nuka Apua’a
• - Other Places - Picasso Triggerfish
Modern System of Classification
• Domain Archae: unicellular (one cell)
prokaryotes (contain no nuclei),
harsh environments.
• Domain Bacteria: common form of
bacteria, circular shaped, most are
aerobic (needs oxygen).
Domain Eukarya:
• Protista: eukaryotesm(have nuclei)
mostly unicelluar, no complex tissues or
systems.
• Fungi: heterotrophic (cannot make its own
food) eukaryotes, unicellular and multicellular(2
or more cells), absorb nutrients, 100,000
species.
• Plantae: Eukaryotes, multi-cellular, most are
autotrophic (make their own food) -----photosynthesis, 350,000 species.
• Animalia: Eukaryotes, multi-cellular,
Heterotrophic (cannot make its own food), most
have symmetrical bodies.
Archae
(bacteria)
Bacteria
Protists
Fungi
Plants
Animals