Prentice Hall Biology Chapter 18

Terms in this set (24)

discipline classifying organisms and assigning each organism a universally accepted name.

Binomial nomendature

classification system in which each species is assigned a two-part scientific name.

group of level of organization into which organisms are classified.

group or level of organization into which organisms are classsified.

group of general that share many characteristic.

group of similar familes.

group of similar orders.

group of closely related classes.

large taxonomic group, consisting of closely related phyla.

the study of evolutionary relationships among organisms.

Evolutionary classification

method of grouping organisms together according to their evolutionary history.

Derived character

Characteristic that appears in recent parts of a lineage, but not in its older members.

diagram that shows the evolutionary relationships among a group of organisms.

Molecular clock

model that uses DNA comparisons to estimate the length of time that 2 species have been evolving independently

most inclusive taxonomic category; larger than a kingdom.

domain of unicellular prokaryotes that have cell walls containing peptidoglycan.

kingdom of unicellular prokaryotes whose cell walls are made up of peptidolycan.

domain of unicellular prokaryotes that have cell walls that do not contain peptidoglycan.

kingdom of unicelllular prokaryotes whose cell walls do not contain peptidoglycan.

domain of all organisms whose cells have nuclei, including protists, plants, fungi, and animals.

kingdom composed of eukaryotes that are not classified as plants, animals, or fungi.

kingdom composed of heterotrophs; many obtain energy and nutrients from dead organic matter.

kingdom of multicelllular photosynthetic autotrophs that have celll walls containing cellulose.

kingdom of mullticellular ekaryotic heterotrophs whose cells do not have cell walls.

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