1. Ch. 17 Classification Taxonomy – science of classifying organisms.
Taxonomist = someone who classifies organisms.
Aristotle – Greek scientists (300 B.C.)
First taxonomist

2. The 1st classification was based on where the organism lived.
1. Air dwellers
2. Land dwellers
3. Water dwellers
Linnaeus – Swedish nautralist
Developed the Modern System of Taxonomy
7 Levels of Classification

3. Canis familiaris (dog)
What are they?
Kingdom – Phylum/Division – Class – Order – Family – Genus – Specific Epithet
Binomial Nomenclature
Genus & Specific Epithet
Underline both
Canis familiaris (dog)

4. Why use scientific names?
1. Used worldwide
Written in latin (dead language)
2. Avoid common name confusion
3. Both are underlined for easy recognition.

5. Human Classification Kingdom: Animalia Phylum: Chordata
Class: Mammalia
Order: Primates
Family: Hominidae
Genus: Homo
Specific Epithet: sapiens

6. 5 Kingdoms
1. Animalia -
2. Plantae
3. Protista
4. Fungi
5. Monera

7. Phylogeny – evolutionary history of a species
Phylogenetic tree – diagram that shows the evolutionary relationship among organisms.
Dichotomous key – set of choices that leads to the name of the organism
Key out an organism according to its characteristics.