Section 1 Biodiversity
 Although scientists have classified almost 2
million species, there are likely many more
Various
naming
systems have
been used
over the years
 Classified
organisms
into two
taxa: plants
and animals
 Taxa=
groups,
taxon- group
Animals
Plants
 Classified based on where
 Classified based on stem
they lived; land, water or
air
differences
 Grouped
organisms
according to their
form and structure
(morphology)
 Had seven levels
 Most like the
system we used
today
 Kingdom
 Phylum
 Class
 Order
 Family
 Genus
 Species
King
Phillip
Came
Over
For
Ginger
Snaps
Linnaeus grouped structurally similar
organisms of a single type into the species
category.
 Linnaeus also gave organisms a species name
a.k.a scientific name with two parts:
 Genus (first letter capitalized)
 Species identifier (all lowercase)
 **Both underlined or italicized
Our scientific name:
 Homo sapiens
Our genus name is Homo
Our species identifier is
sapiens
 This two part naming system is known as
Binomial nomenclature
Chaos chaos
Names
often
describe the
organism
 In addition…
 Some species are given subspecies names to
refer to the geographic area in which they live
Terrapene carolina triunui