September 5

Hi Class,
It has been a few days since we all saw each other, due to the long weekend.
Today in class:
Bell Ringer: How do you classify items in your bedroom. For example, when you put your clothing away, what characteristics determines which items of clothing go in your closet, and what items go into which drawers?

In class we discussed:
Science fair proposals: due on 9/13/07

WHY DO SCIENTIST CLASSIFY?
-Makes it easier to study organisms
- Categories provide information on the organism.

Example: An animal
- moves on its own
- eats of things to survive
A Mammal
- warm blooded
-makes milk
A cat
- Retractable claws
- fur
- pointed ears
- good night vision
Carolus Linnaeus
- 1700's scientist who first proposed a naming system for living things
- Binomial Nomenclature
- 2 name naming system
- Genus: Group of similar living organisms
- Species: A sub group of living organisms. Each animal in the species has very similar characteristics. But they differ from other animals that are of the same genus, but different species
- Example: House cat : Felis domesticus
Cougar : Felis concolor

Same genus: Have claws, pointed ears, seee well in the dark
Diffferent Species: House cats smaller, purr, hunt small animals. Cougars large cats, roar, hunt larger animals.

Organisms of the same genus, when mated DO NOT produce offspring capable of having offspring. Organims of the same species can mate and produce offspring capable of reproducing.

Homework:
Page 1 of your worksheets on Why scientists classify.
Also be workingon you science fair proposals.