Download Ch. 10 (Unit 3) Study Guide

Unit 4: Biodiversity (Ch 10) Study Guide
NAME_________________________________PER____
DUE THURSDAY, NOV. 8th
Vocabulary Words (define in your science notebook, show Mrs.A when done)
Biodiversity
Endemic species
Germ plasm
Keystone species
Ecotourism
Gene
Endangered Species
Habitat conservation plan
Biodiversity Treaty
Threatened species
Exotic species
Extinction
Endangered species Act
Poaching
Biodiversity “hotspot”
Use your book (pages 256-285) to answer the following questions. Think for yourself! Copying IS cheating.
Need a book? Online: my.hrw.com
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Section 10.1 – What Is Biodiversity?
1.
Looking at the map on page 256, what is the relationship between the literacy and fertility rate of
females in Africa? Suggest practical ways we can we decrease fertility/birth rates.
2.
Looking at Fig 1 on page 259, most of the species known to scientists are what?
3.
Why do you suppose scientists estimate so many more unknown species of insects exist than
mammals?
4.
Describe three levels of biodiversity. Which level is most commonly meant by biodiversity?
5.
a. Explain how biodiversity is important to ecosystems
b. Give examples of how biodiversity is important to humans.
6.
Describe how the removal of sea otters affected the entire ocean community of the Pacific coast of
the U.S.
7.
Discuss two common medicines derived from plants. Where did they come from and what are they
used for?
8.
Why is genetic diversity important for the survival of a species?
Section 10.2 – Biodiversity at Risk
9.
How is the current mass extinction different from mass extinction events of the past?
10. What three characteristics make a species more vulnerable to extinction?
11. When was the last great mass extinction event? What MAJOR group of animals disappeared at this
time?
12. According to the description of Figure 6 (pg. 263), what was the probable cause of the past five mass
extinction events?
13. It is estimated that _________ causes almost 75% of the extinctions now occurring.
14. Read the “Connection to Ecology” section on page 265. According to our best scientific evidence,
what two factors are probably leading to a worldwide decline in amphibians?
15. Read the CASE STUDY on pages 266-267. To whom, if anyone, do you think the genetic material of
the rain forests should belong? Explain your answer.
16. The Yanomamo are among the few native peoples who still live traditional lifestyles and use their
knowledge of the forest to meet all their needs. Is there value in preserving this, or should everyone
aspire to live like Americans? Explain!
17. What are some benefits of coral reefs?
18. All 33 species of lemur (10% of the world’s primate species) are found only in ________.
19. List four threats to the California Floristic Province – a biodiversity hotspot in the U.S.. Do you think
these endemic species should be protected? Why or why not?
Section 10.3 – The Future of Biodiversity
20. Explain why saving a few individuals does little to preserve a species (pg. 271).
21. Describe four types of efforts to save individual species.
22. Explain the advantages of protecting entire ecosystems rather than individual species.
23. Describe the main provisions of the Endangered Species Act.
24. Give two examples of worldwide cooperative efforts to prevent extinctions.
25. Why was a complete ban on ivory sales more effective than a limited ban?
26. Read “Making a Difference” (pages 284-285) about Dr. Edward Osborne Wilson. Wilson said,
“Humanity is entering a bottleneck of overpopulation and environmental degradation unique in
history. We need to carry every species through the bottleneck…Along with culture itself, they will be
the most precious gift we can give future generations.” What do you think of this statement? Do we
have an obligation to
future generations? Explain!