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Chapter 18: Classification and Systematics (Levels of Taxonomic Categories…
Chapter 18: Classification and Systematics
Levels of Taxonomic Categories
order
family
class
genus
division
species
kingdom
naming of species
binomial nomenclature
Cladistics
understanding cladograms
digrams that show evolutionary patterns
use nodes
taxon
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apomorphy
derived condition
ancestral condition
parsimony
cladograms and taxonomic categories
basal angiosperms
eudicots
Other Types of Classification Systems
artificial systems of classificaition
several key characters
very easy to observe
chosen as the basis of classification
goal of easy plant identification
classification system for fossils
grouping fossils together
form genera
The Major Lines of Evolution
organisms are in three major domains
archaea
eukarya
bacteria
most significant evolution
origin of life itself
conversion of the prokaryote to the eukaryote
extremely gradual process
grade classification
opposed to a clade
old classification of Protista
Taxonomic Studies
type specimen
single preserved plant
isotypes
prevents reoccurrence of certain specimens
sent to many herbaria around the world
