Classification 1.2. How do you say “dog” in Chinese? - gǒu gǒu How about in spanish? -perro...
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Transcript of Classification 1.2. How do you say “dog” in Chinese? - gǒu gǒu How about in spanish? -perro...
Classification
1.2
How do you say “dog” in Chinese?
-gǒu How about in spanish?
-perroWhat about French?
-mohokoDoes anyone see where this could
be a problem in science???
I. What is classification?A. Classification- Organizing
similar organisms into groups
1. Classifying Classmates Demonstration (by hair color)
II. History of ClassificationA. Aristotle
1. 2000 years ago 2. Greek3. Made 2 Groups:
Plant or Animal
II. History of ClassificationB. Linnaeus
1. Late 18th century2. Swedish
3. Grouped organisms with similar structure
a. Ex: Plants with similar
flowers are grouped together
II. History of ClassificationC. Modern Day Methods
1.Groups based on:a. Similaritiesb. Hereditary information (DNA)c. Phylogeny – evolutionary history of an organism and how it has changed over time.
1) Known from fossils
III. Classification GroupsK iss
P eople
C arefully
O r
F ace
G etting
S lapped
K ingdomP hylumC lassO rderF amilyG enusS pecies
III. Classification Groups
A. Kingdoms are broke into 5 large groups:
B. See example poster
C. Monera (Prokaryotes)
1. Single Cell
2. No nucleus
D. Protist (Eukaryote)
1. Single cell
2. Has nucleus
III. Classification Groups
IV. Naming Organisms
A. Binomial nomenclature – two word naming system created by Linnaeus to name the various species.
1. Genus - first word that is a group of species
2. Species – second word describes the organism
3. Examples
Acer rubrum – maple tree
Acer saccharum sugar maple
IV. Naming Organisms
B. Reasons for using Scientific names
1. Avoid mistakes
2. Group organisms with similar evolutionary history
3. They are descriptive
IV. Naming Organisms
4. Allows scientists to organize information about species quickly and efficiently
IV. Naming Organisms
C. Tools for identifying organisms
1. Dichotomous keys
a. See “Classifying Crazy People” Worksheet
IV. Naming Organisms
1. Dichotomous keys
a. Detailed list of identifying characteristics
b. Characteristics are arranged in steps with 2 choices at each step
IV. Naming Organisms
IV. Naming Organisms
Let’s try identifying one of the bugs in the classroom!
• What is classsification?
• What did Aristotle do?
• What is the order of classification (hint: think kissing)?
• What is bionmial nomenclature?
• Penkeamos kylie…Name the genus & species
V. Recap
• Why would I want to use a dichotomus key?
V. Recap