24 terms

chapter 18 bio

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taxonomy
scientists classify organisms and assign each organism a universally accepted name
binomial nomenclature
two word naming system
genus
group of closely related species
taxon
taxonomic nomenclature levels
family
genera that share many characteristics
order
broad taxonomic category composed of similar familys
class
composed of similar order
phylum
several different classes
kingdom
largest and inclusive category
phylogeny
evolutionary relationships among organisms
evolutionary classification
grouping organisms together based on their evolutionary history
derived characters
characteristics that appear in recent parts of a lineage but not in its older members
cladogram
diagram that shows evolutionary relationships among a group of organisms
molecular clock
uses DNA comparisons to estimate the length of time 2 species have been evolving independently
domain
most inclusive category than others, larger than a kingdom
bacteria
unicellular and prokaryotic
eubacteria
corresponds with domain bacteria
archaea
live in most extreme enviornments
archaebacteria
corresponds with domain archaea
eukarya
consists of all organisms that have a nucleus
protista
organisms that can't be classified as animals
fungi
heterotrophs
plantae
multicellular organisms that are photosynthetic autotrophs
animalia
multicellular and heterotrophic
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