Classification Chapter 9. Classification is the Arrangement of organisms into orderly groups based...
Transcript of Classification Chapter 9. Classification is the Arrangement of organisms into orderly groups based...
Classifying living things makes it easier for biologists to find the
answers to many important questions:
• How many known species are there?
• What are the characteristics of each?
• What are the relationships between these species?
Eight Levels of Classification:
• Domain• Kingdom • Phylum• Class • Order • Family • Genus • Species
Eight Levels of Classification
• Domain• Kingdom• Phylum• Class• Order• Family• Genus • Species
Mnemonic Device
• Does• King• Phillip• Come• Over• For • Grape• Soda?
Basis for Classification
• Carolus Linnaeus—– Founder of taxonomy. – Attempted to classify all living organisms by
their shared characteristics.
Scientific Names
• A scientific name is always the same for a specific organism no matter how many common names it might have.
• Written in Latin or Greek
• Scientific name is underlined or italicized
• All known living things have a two-part scientific name
Two parts to the scientific name
• Genus– First part of the name– The name always
begins with a capital letter
• Species– Second part of the
name– The name always
begins with a lowercase letter
Dichotomous Keys
• Aid in identifying unknown organisms
• Consists of several pairs of descriptive statements
• There are only two alternative responses