Life Has a History post-pest

Name: ___________________________
Grade: ______________________

Directions: Please answer the following questions as best you can. You will be given the same questions after you complete the tour so that you can see how much you have learned.

True or False:

1. _______ Extinction is common.

2. _______ Without variation, evolution cannot happen.

3. _______ Millions of years passed between the extinction of dinosaurs and the appearance of the first humans.

4. _______ A cladogram is a diagram that shows how a group of organisms might be related to each other.

Multiple Choice:

5.Which of the following statements is true?

a. There are more mammals on Earth today than any other group of animals.
b. Few species of organisms have survived compared to the total number that has ever existed.
c. There are fewer insects on Earth than there are molluscs.
d. All of the above are correct.

6. Of all the species that have ever lived on this planet, how many have gone extinct?

a. More than 90%
b. 60-80%
c. 30-60%
d. 10-30%

7. Cladograms are diagrams that show us:

a. How organisms are related to one another.
b. Which group is missing a common ancestor.
c. Which group evolved first.

8. Natural selection is an important mechanism for evolution. If there is a change in the environment, which of the following statements is correct:

a. Individual organisms will evolve in order to survive and reproduce.
b. Those organisms that have features that can take advantage of the environmental change will survive and reproduce.
c. Those organisms that are the strongest will survive and reproduce.

Short Answer:

9. Name three kinds of fossils other than bones and teeth.

10. Name three kinds of evidence that scientists use to determine common ancestry.