1. The science of naming and classifying organisms.
Taxonomy
The science of naming and classifying organisms.

2. Classification Scheme
Domain—all organisms
Kingdom
Phylum
Class
Order
Family
Genus
Species—one type of organism

3. ClassificationScheme
Domain—all organisms
Kingdom
Phylum
Class
Order
Family
Genus
Species—one type of organism

4. Taxonomy cont…
Carolus Linnaeus = Swedish biologist who developed a system for naming and classifying organisms in the 1750’s.
Linnaeus developed binomial nomenclature, which is a two word system for naming organisms.

5. Scientific Names Rules: The first name is always the genus.
The second name is always the species.
The first letter of the genus is always capitalized
The first letter of the species is always lower case.
Italicized or underlined.
Written in Latin.
Homo sapiens

6. Classification Scheme
Kingdom King
Phylum Philip
Class Comes
Order Over
Family For
Genus Good
Species spaghetti

7. Humans
Kingdom Animalia
Phylum Chordate
Class Mammalia
Order Primates
Family Homidae
Genus Homo
Species sapien

8. Bonobo
Kingdom Animalia
Phylum Chordate
Class Mammalia
Order Primates
Family Pongidae
Genus Pan
Species paniscus

9. House Cat
Kingdom Animalia
Phylum Chordate
Class Mammalia
Order Carnivora
Family Felidae
Genus Felis
Species domesticus

10. Lion
Kingdom Animalia
Phylum Chordate
Class Mammalia
Order Carnivora
Family Felidae
Genus Panthera (Felis)
Species leo

11. Housefly
Kingdom Animalia
Phylum Arthropoda
Class Insect
Order Diptera
Family Muscidae
Genus Musca
Species domestica

12. Dichotomous Key Method used for classifying an unknown organisms
Contains pairs of contrasting descriptions
After each description, the user will be directed to another pair of descriptions
The organism will be identified by the contrasting descriptions

13. 1. a. wings covered by an exoskeleton ………go to step 2
b. wings not covered by an exoskeleton ……….go to step 3
2. a. body has a round shape ……….ladybug
b. body has an elongated shape ……….grasshopper
3. a. wings point out from the side of the body ……….dragonfly
b. wings point to the back of the body ……….housefly

15. Cladogram
Shows the evolutionary relationships among groups of organisms
Based on ancestral character (common ancestor of group—example bird & mammal have backbone) and derived character (evolved in ancestor of one group but not the other—example feathers on birds but not on mammals)

16. Characters A B C D E
Wall gecko 1
Crowned lemur
Catfish
Human
Bullfrog