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Kingdoms and Domains 18.3

Kingdoms and Domains 18.3. Domain. Most inclusive taxonomic category; larger than a kingdom. . Bacteria. Domain of unicellular prokaryotes that have cell walls containing peptidoglycan. Eubacteria. Kingdom of unicellular prokaryotes whose cell walls are made up of peptidoglycan. Archaea.

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Kingdoms and Domains 18.3

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  1. Kingdoms and Domains 18.3

  2. Domain • Most inclusive taxonomic category; larger than a kingdom.

  3. Bacteria • Domain of unicellular prokaryotes that have cell walls containing peptidoglycan.

  4. Eubacteria • Kingdom of unicellular prokaryotes whose cell walls are made up of peptidoglycan.

  5. Archaea • Domain of unicellular prokaryotes that have cell walls that do not contain peptidoglycan.

  6. Archaebacteria • Kingdom of unicellular prokaryotes whose cell walls that do not contain peptidoglycan.

  7. Eukarya • Domain of all organisms whose cells have nuclei, including protists, plants, fungi, and animals.

  8. Protista • Kingdom composed of eukaryotes that are not classified as plants, animals, or fungi.

  9. Fungi • Kingdom composed of heterotrophs; many obtain energy and nutrients from dead organic matter.

  10. Plantae • Kingdom of multicellular photosynthetic autotrophs that have cell walls containing cellulose.

  11. Animalia • Kingdom of multicellular eukaryotic heterotrophs whose cells do not have cell walls.

  12. Key Concept • What are the six kingdoms of life as they are now identified? • The six-kingdom system of classification includes the kingdoms Eubacteria, Archaebacteria, Protista, Fungi, Plantae, and Animalia.

  13. Key Concept • What is the three-domain system of classification? • The three domains are the domain Eukarya, Which is composed of protists, fungi, plants, and animals; the domain Bacteria, which corresponds to the kingdom Eubacteria; and the domain Archaea, which corresponds to the kingdom Archaebacteria.

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