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

 Classified based on where they lived; land, water or air

Plants

 Classified based on stem 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