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.Biology Chapter 5 Test: Biodiversity and Conservation
True/False Indicate whether the statement is true or false.
- In many cases, if a renewable resource is not conserved properly it will become a nonrenewable resource.
- Because the water cycle recycles fresh water at a relatively slow pace, water is considered a nonrenewable resource.
- The process of bioremediation is the best way to conserve an ecosystem's biodiversity.
- A species with a low level of genetic diversity has a higher chance of becoming extinct than a species with a high level of genetic diversity.
- The best way to restore a damaged ecosystem is to introduce predators to control the population of endemic species.
- The sustainable use of natural resources is one way to conserve an area's biodiversity.
- An ecosystem's biodiversity has a direct effect on the area's economy.
- The decline of a single species in an ecosystem rarely affects the other species living in that ecosystem.
Multiple Choice Identify the choice that best completes the statement or answers the question.
Table 5-1 shows the population sizes for 6 different species in four different areas.
Area
A B
C D
Species U
3 0
0 4
Species V 7
6
0 3
Species W 2
8 2
11
Species X 2
0
0 1
Species Y 2
6
0 6
Species Z
4 6
2 0
Table 5-
- If the four areas in Table 5-1 were the only places in the world to find these organisms, which species most likely faces the greatest chance of extinction? a. Species U c. Species Y b. Species X d. Species Z
- Which area in Table 5-1 has the greatest biodiversity? a. Area A c. Area C b. Area B d. Area D
- Island A has an area of 30 square kilometers. Island B has an area of 400 square kilometers. The islands are near each other. Which of the following statements is most likely to be true? a. Island A has greater biodiversity and a higher percentage of edge effect than Island B. b. Island A has less biodiversity and a higher percentage of edge effect than Island B. c. Island A has greater biodiversity and a lower percentage of edge effect than Island B. d. Island A has less biodiversity and a lower percentage of edge effect than Island B.
- If the communities in Figure 5-1 were put in order of least to most biological diversity, they would be.
Figure 5- a. b.
ABCD
CADB
c. DBCA d. BDAC
Biodiversity
Figure 5-
- What does the graph in Figure 5-2 tell you?
a. the farther from land, the more biodiversity b. the larger the islet, the more biodiversity c. islet size and biodiversity are not related d. biodiversity decreases with islet size
Elm leaves Caterpillars
Aphid
Dragonfly
Robin
Bass
\k
Cougar
Algae
Fox Bear
Minnow
Figure 5-
- Examine the food web shown in Figure 5-4. What would most likely happen to the organisms in this food web if the robin began to disappear? a. The hawk would be forced to start eating the dragonfly. b. Most of the organisms in the ecosystem would starve and die. c. The terrestrial organisms would starve, but the aquatic organisms would survive. d. There would be an overpopulation of caterpillars, which would kill many elm trees.
- Examine the food web shown in Figure 5-4. What would most likely happen to the organisms in this ecosystem if the algae began to disappear? a. The bass population would increase. b. All of the aquatic organisms would become overpopulated. c. The dragonfly population would likewise begin to disappear. d. The fox would begin to starve and be forced to emigrate to another area.
- Which of the following practices can help conserve an area's biodiversity? a. biological magnification c. species introduction b. habitat fragmentation d. sustainable usage
- The extinction rate of terrestrial and freshwater species is currently higher than the extinction rate of marine species. What is the most likely reason for this? a. Human activities have a greater impact on terrestrial and freshwater ecosystems. b. There are no economic incentives for humans to use ocean resources. c. Marine organisms have had a longer time to adapt to their environment. d. The oceans have a greater area than land and freshwater ecosystems combined.
- A biologist is searching for a new plant-based antibiotic. In which of the following types of ecosystems would the biologist have the best chance of finding new kinds of plants to use in her research? a. highland desert c. temperate deciduous forest b. polar tundra d. tropical rain forest
- If a disturbance were to occur in an ecosystem, which of the following ecosystems would be most vulnerable to extinctions? a. continental ecosystems c. marine ecosystems b. island ecosystems d. tropical ecosystems
- Why is sandstone classified as a nonrenewable resource? a. Sandstone takes many thousands of years to form. b. Sandstone is not composed of natural rock materials. c. Sandstone is not a very useful resource to humans. d. Sandstone is no longer being formed on Earth.
