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Classification. Take Out Inv. 31: Classification For Stamping. Question of the Day. Question: Why do scientists classify living things? Advantages? Answer: … … …. Turn in HW After Review. Inv. 31: Classification. Notes: Classification. Video: History of Classification. Taxonomy.
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Classification Take Out Inv. 31: Classification For Stamping
Question of the Day Question: Why do scientists classify living things? Advantages? Answer: … … … Turn in HW After Review
Taxonomy • taxonomy- classification of living things • Use DNA to classify life today • Called phylogeny
Nomenclature • Nomenclature- naming structure • Linnaeus developed classification based on structural features • Organisms with similar features were in the same groups • Rules: • No reusing genus names for different groups • No reusing species names
Why Scientific Names? Common Names: • Puma • Cougar • Mountain lion Scientific name: Puma concolor
Why Scientific Names? Mule Deer/Black Tailed Odocoileushemionus White Tail/Eastern Odocoileusvirginianus
Why Scientific Names? Common Names: • Killer Whale • Orca • Orca Whale • Blackfish Scientific Name: Orcinus orca (Linneaus, 1758)
Nomenclature • Two-term, Latin naming system • Binomial (2 name) nomenclature: Homo sapiens • 1st name = genus; capitalize first letter • 2nd name = species; not capitalized • Both words italicized or underlined
Classification Groups • 8 levels • As you move down, groups become more specific and more similar
Classification Groups Mnemonic: Your Mnemonic: • Domain • Kingdom • Phylum (plural = Phyla) • Class • Order • Family • Genus (plural = Genera) • Species Dear King Philip Can Order Five Good Shoes
Domains 1. Eubacteria- true bacteria 2. Archaea- primitive, unicellular organisms that live in extreme environments 3. Eukaryotes- everything else (plants, animals, fungi…) Eubacteria
2 Cell Types 1. Prokaryotes • Archaea& eubacteria • Unicellular • No membrane-bound organelles • No nucleus • Smaller cells
2 Cell Types 2. Eukaryotes • Fungi, plantae, animalia, protista • Multicellular • Many organelles • Nucleus • Larger cells