Download Name

Name
Date
Period
Life Science Chapter 7 Section 1 pages 224 – 231
1. When did the ship HMS Beagle set sail from England? _________________________
2. What does a naturalist study?
*
3. After leaving South America, where did the HMS Beagle go? ____________________
4. Darwin was amazed by the diversity of living things he saw on the voyage.
In Brazil he saw insects that looked like ____________________________
5. What is the definition of “species”?
*
6. What is a fossil?
*
7. How did the fossil sloth bones Darwin found compare to those of sloths alive in
Darwin’s time?
*Fossil sloth:
*Modern sloth:
8. What year did the HMS Beagle reach the Galapagos Islands? ____________________
9. Fill out the chart comparing iguanas Darwin found on the mainland of South America
to the iguanas he found on the Galapagos Islands.
XXXXXXXXXXXXXXX
Mainland Iguanas
Galapagos Iguanas
Describe the claws
Describe HOW the iguana
uses its claws
What the iguana eats
10 What are two ways that plants and animals from the mainland of South America could
have traveled to the Galapagos Islands?
*
*
11. How could Darwin tell which of the Galapagos Islands a tortoise came from?
12. What were the most obvious differences between the finches from the different
Galapagos Islands?
13. Beak shape is an example of an _______________________________________
14. What does the word “adaptation” mean?
15. What does the word “evolution” mean?
16. What is the definition of a “scientific theory”?
17. How did pigeon breeders produce pigeons with two or three times the usual number
of tail feathers?
18. What is the title of the book that Darwin published in 1859?
19. What does “natural selection” mean?
20. What are three factors that affect the process of natural selection?
*
*
*
21. Only traits that are inherited, or controlled by genes, can be acted upon by _________