Classifying Organisms

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Classifying Organisms

• 7th Grade Science

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Why do Scientists Classify?

• Why?
• Easier to study
• Less confusion
• Easier to see connections
• How?
• Physical characteristics
• DNA

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Scientific Naming

• Why?
• Reduces confusion
• Binomial Nomenclature
• Two words for every name
• Greek or Latin
• Genus species (ex. Canis lupis)
• General Rules
• Always use italics of underline when written
• Capitalize genus
• Lowercase for species

Canis lupis
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Taxonomy

• Taxonomy
• Classification of organisms based on
  characteristics
• 8 levels
• Each level has fewer organisms
• Which organisms are more similar?
• Same genus
• Same family

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Levels of Classification

• 8 Levels
• Domain
• Kingdom
• Phylum
• Class
• Order
• Family
• Genus
• Species

Mnemonic Device?
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Domains

• Major Groups
• Three domains
• Bacteria
• Archaea
• Eukarya

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Types of Cells

• Prokaryotes
• No Nucleus
• Very small
• Bacteria
• Domains Bacteria and Archaea

• Eukaryotes
• Cells contain a nucleus
• Larger than prokaryotes
• Domain Eukarya

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Kingdoms of Life

• Separated by common characteristics
• 6 kingdoms
• Archaebacteria
• Eubacteria
• Protista
• Fungi
• Plantae
• Animalia

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Review

• Naming Binomial Nomenclature
• Levels of Classification
• 3 domains
• Types of Cells
• Kingdoms of Life