1. Module 11 Classification of Organisms Day 1 of 2

2. I. Isn’t everything living thing either a plant or an animal?
A. Aristotle is credited with the first true classification system. He grouped all living things into two basic groups: plant and animal. OR

3. B. Linnaeus further classified plants and animals by dividing them into related groups. He used the Latin language, because Latin was not longer spoken conversationally and thus was less likely to change.
1. He first grouped related organisms. He called this a genus. For example, all of the dog-like creatures were grouped as the genus Canis.

4. 2. He next gave every different type of organism in the group a specific name, which he called specie. For example, the dog became
Canis familiaris and the wolf
Canis lupus. Notice the genus is capitalized but the specie begins with a lower case letter!
Both are italicized or underlined.

5. What name do you use for this organism?
Loxosceles reclusa (Brown Recluse)
3. Every organism was given a two-word name, the genus and specie. This practice of binomial nomenclature continues today, giving each organism a “scientific name”.
4. The benefit of binomial nomenclature includes eliminating confusion due to common names (ex. cottonmouth and water moccasin are actually the same animal) and allows scientists around the world to more easily communicate.
What name do you use for this organism?

6. C. Even after the microbial world was discovered, the two “kingdom” system continued.

7. E. The science of classification, taxonomy, now allowed scientists to assign seven levels of taxa to living organisms:
King
Phillip
Came
Over
For
Green
Soup

8. 1. The kingdom is the most general of these seven taxa, thus the kingdom would contain the greatest number of organisms.
2. Specie is the most specific of these seven taxa, thus the specie would contain only one type of organism. A specie is defined as a group of organisms which can interbreed and produce fertile offspring.

9. F. Today, we use three domains, which are divided into six kingdoms
F. Today, we use three domains, which are divided into six kingdoms. These domains are based on new information about possible evolutionary relationships.

10. Kahoot!
Binomial Nomenclature

11. Independent Practice Go to: mscainlittlefield.weebly.com
Find today’s PowerPoint slides in Mod 11
Find the slide after this and complete the questions in your travel journal
Raise your hand when you have finished
Complete the binomial nomenclature activity

12. Which level is the most general? The most specific?
At what taxonomic level do the dog and human become different?
What is the family name of the dog?
Which organism is most closely related to the dog?
What is the scientific name of the dog?
A genus is composed of a number of related?
A group of related phyla are?
Which taxon contains the largest # of organisms?