1. Bell Work: Turn in the Binomial Nomenclature worksheet.
Pick up a small handout.
Glue in the handout on page 25.
Title page 25 “Dichotomous Keys”.

2. READ THIS!
Scientists think that there may be roughly 10 million species on Earth, but only about 2 million species have been identified and named. Each year, scientists add the names of thousands of new species to taxonomic lists that catalog the diversity of life. To celebrate this feat, the International Institute for Species Exploration (IISE) compiles a top 10 new species list of notable discoveries that were made during the previous year. The annual list is released on May 23 in honor of the birthday of Carl Linnaeus, a renowned botanist and physician who developed our modern binomial classification system for naming organisms by their genus and species names.

3. What is the giant tortoise’s genus name?
READ THIS!
A distinct species of giant tortoise was discovered on the island of Santa Cruz in the Galapagos off the coast of Ecuador. This giant tortoise is named Chelonoidis donfaustol.
What is the giant tortoise’s genus name?

4. What is the snake’s most specific name?
READ THIS!
A new species of snake called the ruby-eyed green pit viper (Trimeresurus rubeus) has been discovered in forests near Ho Chi Minh City. Vietnam’s Cat Tien National Park is a stronghold for Trimeresurus rubeus, which inhabits a rather small geographic range, where pressures on forests are high.
What is the snake’s most specific name?

5. What do we know about classification?
There is an 8-level classification system.
The “domain” is very broad and the “species” is most specific.
The scientific two-part name consists of the genus and species.

6. The scientific name for a wolf is Canis lupis
The scientific name for a wolf is Canis lupis. What does the first word in the name represent?
Genus
Kingdom
Specific epithet
Domain name

7. The chart shows the classification of a housefly
The chart shows the classification of a housefly. Which of the following is the LEAST specific classification for this insect? A. Animalia C. Insecta B. Arthropoda D. Musca

8. Do you know the levels of classification?
SHOUT IT OUT!
Do you know the levels of classification?
A level of classification will be shown on the screen.
Shout out the level that is the most specific!

9. SHOUT IT OUT!
Domain or Genus

10. SHOUT IT OUT!
Genus or Species

11. SHOUT IT OUT!
Phylum or Domain

12. SHOUT IT OUT!
Phylum or Kingdom

13. SHOUT IT OUT!
Class or Order

14. SHOUT IT OUT!
Genus or Family

15. SHOUT IT OUT!
Family or Species

16. Dichotomous Keys
Chapter 2
SPI
I can use a classification key to identify an unknown organism.

17. Dichotomous Key—an identification tool that uses pairs of descriptive statements to identify organisms
RULES: 1. Always start at 1A. 2. Read both choices carefully. 3. If you are unsure, follow both paths then backtrack.

19. Alienus bob
Alienus jack
Alienus george

20. Time to practice!
Dallus

21. Time to practice!
Kentuckyus

22. Time to practice!
Dakotus

23. Today…
Your tribe has been lost in the rain forest for two days! One of your buddies picked several pounds of berries in an effort to provide at least a little food for you. The handful of berries you receive may not seem like much, but it sure is better than nothing! We have a problem though. The berries clearly did not all come from the same type of plant. They appear to belong to many different species of plants. Some are quite tasty, while other berries could be less than tasty…

24. Your Assignment…
Each member in the group should receive five berries to identify.
Each member will complete an identification chart for their own five berries.
You may discuss and help each other work through the dichotomous key.

25. Brief Description of the Jelly Bean What does the bean taste like?
Data Table:
Brief Description of the Jelly Bean
Numbers You Followed
Scientific Name
What does the bean taste like?
Identify how the berry looks
Ex: 1b, 3a, 7a
Be sure to write it correctly!
Be very descriptive!

26. Show what you know…
Summarize binomial nomenclature. What does it mean? How is it important? What does it consist of?