1. Classification
Chapter 9
Notebook Page 111

2. Standard
S7L1 Students will investigate the diversity of living organisms and how they can be compared scientifically.
a. Demonstrate the process for the development of a dichotomous key.
b. Classify organisms based on a six-kingdom system and a dichotomous key.

3. Essential Questions
What do scientists do when a new species is discovered?
How and why are organisms grouped?
Why have classification systems changed over time?

4. Classification – Page 112
Putting things into groups based on similar characteristics.
What are some things that humans classify?

5. Why do we classify things?
People classify things everyday to make life easier.
What would life be like if grocery stores were not classified? How long would it take to find food?
Scientists classify organisms to make answering scientific questions easier.
What are the relationships between species?
What differences exist among species?

6. How do we classify?
Taxonomy is the science of classifying and naming living organisms.
Carolus Linnaeus was a scientist that began classifying and naming organisms based on similarities.
Cladograms show the evolutionary similarities and differences between organisms. See page 223.

7. Branching Diagram (Cladogram)
The more characteristics that organisms have in common the more closely related they are. These diagrams also show that these organisms have a common ancestor.

8. Cladogram Practice Sheet

9. Analyze the cladogram Page 114.

10. Levels of Classification
There are many levels into which organisms are classified.
Those levels are:
Domain
Kingdom
Phylum
Class
Order
Family
Genus
Species

11. Mnemonic
Can you develop a mnemonic for the seven levels of classification?
Dumb Kids Prefer Candy Over Fancy Green Salad
Create your own mnemonic on page 115 of your notebooks.

12. Examine pages

13. Attach the table below to page 116 of your notebook.
Highlight the levels of classification.
Levels become more specific as you go down and more general as you go up.

14. Cobra
Human
Brown Spider
Kingdom
Animalia
Phylum
Chordata
Arthropods
Class
Reptilia
Mammalia
Arachnids
Order
Squamata
Primates
Araneae
Family
Elapidae
Hominidae
Loxoscelidae
Genus
Ophiophagus
Homo
Loxosceles
Species
hannah
sapiens
reclusa

15. Scientific Names
Because of classification scientists can give organisms scientific names.
We use common names for organisms but scientific names are important for communication with scientists that speak other languages.
Organisms can have many common names but each organism has only one scientific name.

16. Scientific names are taken from the organisms classification.
The genus and species level classifications are used to name organisms.
Ex:
Asian Elephant
Scientific Name : Elephas maximus
Must be written with genus name capitalized, and in italics.
Genus
Species
Elephas
Maximus

17. Attach the following table to your notebook on page 87

18. What type of organism is Vulpes velox? Fox Dog Wolf Gopher
Copy these questions below the table and highlight the correct answers.
If two organisms belong to the same order they must also belong to the same ______.
Family
Phylum
Species
Genus
What type of organism is Vulpes velox?
Fox
Dog
Wolf
Gopher
3. In the table, the species name for a fly is M. domestica. What does the M stand for?
4. What is the full scientific name for a fly?
5. Two plants, Virginia mertensia and Virginia hospatcia belong to the same what?
Family, genus and species
Order genus and species
Order, family and genus
Species , kingdom and phylum

19. Quick Review --- Concept Map 9
Complete on page 88 of your notebook.