18-3 Two Modern Systems of Classification

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18-3 Two Modern Systems of Classification

• kingdom cell type no. of cells
  nutrition
• Archaebacteria pro. uni. both
• Eubacteria pro. uni. both
• Protista euk. both both
• Fungi euk. both hetero.
• Plantae euk. multi.
  auto.
• (some hetero)
• Animalia euk. multi. hetero.

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• Prokaryotic pro.
• Eukaryotic euk.
• Unicellular uni.
• Multicellular multi.
• Heterotrophy hetero.
• Autotrophy auto.

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1. Kingdom Archaebacteria

• Ancient bacteria chemosynthetic bacteria.
•   Live in harsh environments sulfurous hot
  springs, very salty lakes, intestines of mammals.
• Resembles first kinds of organisms to live
  on Earth.

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2. Kingdom Eubacteria

• True bacteria use oxygen.
• Do not live in harsh environments.
• Cause tooth decay, milk to turn into yogurt,
  food poisoning, other disease causing bacteria.
• Along with kingdom archaebacteria, these include
  greatest number of living things on Earth.

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3. Kingdom Protista

• Mostly unicellular
• Giant kelp is multicellular but it lacks
  specialized tissues (which plants have)
•   50,000 species
• euglena, amoeba, paramecium and algae

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4. Kingdom Fungi

• Absorb nutrients (do not ingest)
• 100,000 species
• mushrooms, puffballs, molds, mildews, rusts
  and smuts

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5. Kingdom Plantae

• Most photosynthesize
• Most on land
• 350,000 species
• mosses, ferns, conifers and flowering plants

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6. Kingdom Animalia

• Symmetrical body organization
• Move about their environment
• Humans, insects, reptiles, amphibians, birds

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3-Domain System

• Used in modern science. Based on differences of
  RNA.
• Domain Kingdom
•  Bacteria Eubacteria
• Archaea Archaebacteria
• Eukarya Protists
• Fungi
• Plantae
• Animalia