Download File - Bacon County High School

Life Has a History focus questions
http://www.ucmp.berkeley.edu/education/explorations/tours/i
ntro/Intro5to12/tour1.php
Name: ___________________
Class:______________________
Answer the following questions as you navigate through Life Has A History. Use Level 2 Link on
homepage.
1. Of the 30 million species of living things estimated to exist today, how many of them are not
animals?
2. Find the timeline. How many millions of years did dinosaurs exist on Earth before they
became extinct?
3. Name at least five things other than bones that can be preserved as fossils.
4. Explain what divergence is.
5. In your own words, describe what cladograms represent.
6. What types of evidence are used to determine evolutionary relationships?
7. In your own words, explain how Geospiza Fortis is a good example of natural selection.
8. Describe two other mechanisms for evolution in addition to natural selection.
9. Give an example of an animal that has gone extinct because of human influence and explain
what happened.
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.
Hopefully, this Tour through Time will have raised many questions for you to think about. Take a
moment to reflect on what you have learned about life's history and then answer one of these
questions:
How can life's history explain the biodiversity we see today?
OR
Why is your life history dependent on events that took place millions of years ago?