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How are Living Things Classified?

History of Classification

· 2,000 years ago, Aristotle classified living things as either plants or animals. · 400 years ago, Linnaeus, classified livings things based on their structure. · Modern classification is much like Linnaeus'. Based on Phylogeny: the evolutionary history of an organism.

Changing Number of Kingdoms

First Introduced 1700s Plantae

Names of Kingdoms

Animalia

1800s

Protista

Plantae

Animalia

1950

Monera

Protista

Fungi

Plantae

Animalia

1990s

Eubacteria

Archaebac teria

Protista

Fungi

Plantae

Animalia

Eubacteria

Archaebacteria

Protista

Fungi

Changing Number of Kingdoms

First Introduced 1700s Plantae

Names of Kingdoms

Animalia

1800s

Protista

Plantae

Animalia

1950

Monera

Protista

Fungi

Plantae

Animalia

1990s

Eubacteria

Archaebac teria

Protista

Fungi

Plantae

Animalia

Classification

Kingdom Phylum Class Order Family Genus Species

Information

How are Living Things Classified?

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