What do living things need?

1. a place to live that provides for the organism’s needs

2. raw materials like water, proteins, fats and sugar

classification systems

1. aristotle classified organisms more than 2000 years ago

2. Carolus Linnaues introduced a system based on similar structures of organisms.

3. Modern systems based on phylogeny-the evolutionary history of an organism

4. Today’s classification system separates organisms into 7 categories

   1. Kingdoms are the largest category

   2. The smallest classification category is a species

   3. Organisms that belong to the same species can mate and produce fertile

5. The seven categories are:

   kingdom

   phylum

   class

   order

   family

   genus

   species

6. King Phillip Came Over For Good Spaghetti

7. Binomial Nomenclature - two word system used by Linneaeus to name species

   a. First word identifies the GENUS or group of similar species

   b. Second word tells something about the species- what it looks like, where it is found, or who discovered it

   Why use Scientific Names?

   a. to avoid mistakes

   b. to show that organism in the same genus are related

   c. to give descriptive information

   d. to allow information to be organized easily

8. Tools for identifying organisms

   a. field guides-description and illustrations of organisms

   b. dichotomous keys-detailed dichotomous key of identifying characteristics include scientific names