Classification

How would you classify these shapes?

Level 1 Classification

Blue Pink

Level 2 Classification

Square Heart

Circle Triangle

Which level is more specific?

Square Heart

Circle Triangle

Blue Pink

A. Level 1

B. Level 2

Why is Classification Important?

• To Study the Diversity of Life

• To name organisms

• Group organisms in a logical manner that has a biological meaning

Did King Philip Come Over For Good Spaghetti?

omainingdomhylumlassrderamilyenuspecies

• D• K• P• C• O• F• G• S

Seven classification groups of living things

BroadestMore Specific

Most Specific

At what classification level do we (humans and lions) go our

separate ways?

A. Phylum (Chordata)

B. Class (Mammalia)

C. Order (Carnivora)

D. Family (Felidae)

Human Classification

• Domain• Kingdom• Phylum• Class• Order• Family• Genus • Species

EukaryaAnimaliaChordataMammaliaPrimatesHominidaeHomoSapiens

The 3 domains

• Archaea (Prokaryote)

• Bacteria (Prokaryote)

• Eukarya (Eukaryote)

• Archea– Archaebacteria

• Bacteria– Eubacteria

• EukaryotesA. FungiB. ProtistaC. AnimaliaD. Plantae

The 6 kingdoms• Archea

– Archaebacteria

• Bacteria– Eubacteria

• Eukarya– Fungi– Protista– Animalia– Plantae

Animal Phyla

• There are 38 animal phyla• 97% of animal species are invertebrates

– Cnidaria– Platyhelminthes – Annelida – Porifera – Mollusca– Arthropoda

• There is only one phylum for vertebrates– Chordata

• There are 16 classes of chordates• 10 of them are different classes of fish• The others are:

– Reptilia– Aves– Amphibia– Mammalia

Chordata Classes

• There over 30 orders of mammals• Here are a few

– Carnivora– Primates– Rodentia– Lagomorpha– Cetacea– Chiroptera– Proboscidea– Sirenia

Mammalian Orders

Which Similiarities are most Important?

A. Looks

B. Habitat

C. Food

D. Locomotion

E. Evolution

– Phylogeny-evolutionary relationships among organisms

• Scientists group organisms based on evolutionary descent or phylogeny

Name that organism

• Taxonomy-scientists classify organisms and assign each organism a universally accepted name.

Which level of classification is more specific than Genus?

A. Kingdom

B. Class

C. Family

D. Species

Binomial Nomenclature

• Developed by Linnaeus

• Two-name system

• Each organism has a genus and a species name

• First name (genus); second name (species)

Are You Paying Attention?

A. Yes

B. Mostly

C. Not Really

D. Not at All

Binomial Nomenclature

• Combination of the genus and species name of an organism is a scientific name

• Scientific names of organisms are always italicized or underlined

• Genus name is capitalized

• Species name is lower-case