1. Animalia - kingdom of multicellular eukaryotic heterotrophs whose cells do not have cell walls.
2. Archaea - domain of unicellular prokaryotes that have cell walls that do not contain peptidoglycan.
3. Archaebacteria - kingdom of unicellular prokaryotes whose cell walls that do not contain peptidoglycan.
4. Bacteria - domain of unicellular prokaryotes that have cell walls containing peptidoglycan.
5. binomial nomenclature - classification system in which each species is assigned a two-part scientific name.
6. cladogram - diagram that shows the evolutionary relationships among a group of organisms.
7. class - group of similar orders.
8. derived character - characteristic that appears in recent parts of a lineage, but not in its older members.
9. domain - most inclusive taxonomic category; larger than a kingdom.
10. Eubacteria - kingdom of unicellular prokaryotes whose cell walls are made up of peptidoglycan.
11. Eukarya - domain of all organisms whose cells have nuclei; including protists, plants, fungi, and animals.
12. evolutionary classification - method of grouping organisms together according to their evolutionary history.
13. family - group of genera that share many characterists.
14. Fungi - kingdom composed of heterotrophs; many obtain energy and nutrients from dead organic matter.
15. genus - group of closely related species, and the first part of the scientific name in binomial nomenclature.
16. kingdom - large taxonomic group, consisting of closely related phyla.
17. molecular clock - model that uses DNA comparisons to estimate the length of time that two species have been evolving independently.
18. order - group of similar families.
19. phylogeny - the study of evolutionary relationships among organisms.
20. phylum - group of closely related classes.
21. Plantae - kingdom of multicellular photosynthetic autotrophs that have cell walls containing cellulose.
22. Protista - kingdom composed of eukaryotes that are not classified as plants, animals, or fungi.
23. taxon - group or level of organization into which organisms are classified.
24. taxonomy - discipline of classifying organisms and assigning each organism a universally accepted name.
2. Archaea - domain of unicellular prokaryotes that have cell walls that do not contain peptidoglycan.
3. Archaebacteria - kingdom of unicellular prokaryotes whose cell walls that do not contain peptidoglycan.
4. Bacteria - domain of unicellular prokaryotes that have cell walls containing peptidoglycan.
5. binomial nomenclature - classification system in which each species is assigned a two-part scientific name.
6. cladogram - diagram that shows the evolutionary relationships among a group of organisms.
7. class - group of similar orders.
8. derived character - characteristic that appears in recent parts of a lineage, but not in its older members.
9. domain - most inclusive taxonomic category; larger than a kingdom.
10. Eubacteria - kingdom of unicellular prokaryotes whose cell walls are made up of peptidoglycan.
11. Eukarya - domain of all organisms whose cells have nuclei; including protists, plants, fungi, and animals.
12. evolutionary classification - method of grouping organisms together according to their evolutionary history.
13. family - group of genera that share many characterists.
14. Fungi - kingdom composed of heterotrophs; many obtain energy and nutrients from dead organic matter.
15. genus - group of closely related species, and the first part of the scientific name in binomial nomenclature.
16. kingdom - large taxonomic group, consisting of closely related phyla.
17. molecular clock - model that uses DNA comparisons to estimate the length of time that two species have been evolving independently.
18. order - group of similar families.
19. phylogeny - the study of evolutionary relationships among organisms.
20. phylum - group of closely related classes.
21. Plantae - kingdom of multicellular photosynthetic autotrophs that have cell walls containing cellulose.
22. Protista - kingdom composed of eukaryotes that are not classified as plants, animals, or fungi.
23. taxon - group or level of organization into which organisms are classified.
24. taxonomy - discipline of classifying organisms and assigning each organism a universally accepted name.