Chapter 15 Section 1: History of Evolutionary Thought

Name ______Date ______Hour ______

Chapter 15 Section 1: History of Evolutionary Thought Guided Reading (pg. 297-301)

Define the following vocabulary using the glossary in the back of the textbook. a) Evolution –

b) Natural Selection –

c) Adaptation –

d) Fitness –

The Idea of Evolution 1. After visiting the Galapagos Islands, ______noted that groups of animals varied from island to island.

2. After traveling around the world, Darwin became convinced that...

3. What is a theory?

4. Georges Cuvier gave convincing evidence of what?

5. Cuvier promoted the idea of catastrophism, explain what that is.

6. Charles Lyell shared some of Cuvier’s ideas, but believed in uniformitarianism. Define uniformitarianism.

7. Jean Baptiste Lamarck also supported the idea that populations of organisms change over time. However, he proposed that…

8. What did Lamarck call his idea? Name ______Date ______Hour ______

Darwin’s Ideas 9. What was the name of Darwin’s book?

10. List the two goals in his book.

11. Describe Darwin’s observations of finches on the Galapagos Islands. What did he suspect from these observations?

12. List the four parts of Natural Selection and a brief description of each.

Application Questions (NOT in textbook) 13. There are 3 types of polar bears: ones with thick coats, ones with thin coats and ones with medium coats. It is fall, soon to be winter. The temperatures are dropping rapidly and the bears must be kept warm, or they will freeze to death. Many of the bears have had ~2 cubs each but due to the extreme temperatures, many mothers only have one cub left. Which type of polar bear would survive longer once the weather changes? Why?

14. In ostriches, there are 2 types: ones that run fast and those that run slowly. The fast birds can reach up to 40 miles an hour. Jackals love to eat ostrich, and they Name ______Date ______Hour ______

can reach speeds of up to 35-40 miles per hour. A flock of ostrich will lay ~ 10 eggs (each mother only lays 1), but many rodents break into the eggs and eat the fetus before they hatch. Which type of ostrich would survive longer? Why?