Download 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
• Domain of unicellular prokaryotes that have
cell walls that do not contain peptidoglycan.
Archaebacteria
• Kingdom of unicellular prokaryotes whose
cell walls that do not contain peptidoglycan.
Eukarya
• Domain of all organisms whose cells have
nuclei, including protists, plants, fungi, and
animals.
Protista
• Kingdom composed of eukaryotes that are not
classified as plants, animals, or fungi.
Fungi
• Kingdom composed of heterotrophs; many
obtain energy and nutrients from dead
organic matter.
Plantae
• Kingdom of multicellular photosynthetic
autotrophs that have cell walls containing
cellulose.
Animalia
• Kingdom of multicellular eukaryotic
heterotrophs whose cells do not have
cell walls.
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.
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.