Classification of Life

Chapter 15

Classification

Taxonomy- science of classifying living organisms

Aristotle

Greek philosopherDivided life into two parts:

Carolus Linnaeus (1750’s)

Binomial Nomenclature – two word system– Two names– Genus – category

containing similar species.

– species– (scientific name)

Man Dog GrasshopperKingdom Animalia Animalia AnimaliaPhylum Chordata Chordata ArthropodaClass Mammalia Mammalia InsectaOrder Primates Carnivora OrthopteraFamily Hominidae Canidae LocustidaeGenus Homo Canis SchistocercaSpecies sapiens familiaris americana

Dichotomous Keys

Used to identify and name species

Phylogeny

- evolutionary history of a species- anatomy- biochemistry- six kingdoms- geologic time scale- 4 billion years of life

Six Kingdoms of Life

notes

3 Domains of Life

Eubacteria

- prokaryotes- no nucleus or organelles- unicellular- often heterotrophs- common bacteria- strong capsule - blue-green algae

Archaebacteria

Protist

Fungus

Plants

Animals