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Forefathers of Classification
• Aristotle (Greece): the first person to realize that all living things should be organized
• Carl Linneaus (17th century): 1st person to classify living things in a scientific way
• Charles Darwin (18th century): developed a classification system based on evolution
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Grouping of Living Things by Domain
• Domains of life:– Eukaryota• Animals• Plants• Fungi (mushrooms)
– Archaea• Microbes
– Eubacteria• Blue-green algae
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Grouping of Living Things by Category
• All living things are divided into seven categories– Kingdom (common)– Phylum– Class– Order– Family– Genus– Species (specific)
• Think: Keep Pond Clean Or Froggy Gets Sick
Kingdom is the most common and includes many diverse animals. As you move down the list, you get more and more specific about a particular animal.
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Create Classification Study Aidspecies
class
genus
family
order
phylum
kingdom
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Species
• Most EXCLUSIVE group• Contains organisms that are VERY closely
related. • Can reproduce and create more of their own
American Black Bear
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Genus
• A group of species that are closely related and share a common ancestor.
Asiatic Black BearUrsus thibetanus
America Black BearUrsus americanus
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Family
• A group of similar, related genera (genus)• Smaller than a genus but bigger than an order
Asiatic Black BearUrsus thibetanus
America Black BearUrsus americanus
Sloth BearMelursus ursinus
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Order
• A taxon that made of closely related families.• For example, carnivores make up one order
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Class
• A taxon containing one or more related orders• For example, mammals make up one class
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Phylum
• A group of related classes• Chordata (vertebrates) are one phylum
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Kingdom
• Most INCLUSIVE group (most species, greatest diversity)
• 6 kingdoms of life– Animals– Plants– Fungi– Protists– Bacteria – Archaebacteria
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Keep Pond Clean Or Froggy Gets Sick!
Kingdom, Phylum, Class, Order, Family, Genus, Species