At which time after clear-cutting does the ecosystem exhibit the greatest species richness?
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Question 2
2.
Which tree species grows best with full sunlight?
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Question 3
3.
Four islands, A, B, C, and D, differ only in distance from the mainland, area, and species diversity. Which island would be predicted to have the highest species diversity?
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Question 4
4.
A one-hectare pond is sampled in early September. The sample yields 1 small catfish as well as 17 benthic invertebrates that represent 10 species.
If the pond is resampled a year later, which of the following would best indicate that the pond had been adversely affected by adjacent development?
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Question 5
5.
A one-hectare pond is sampled in early September. The sample yields 1 small catfish as well as 17 benthic invertebrates that represent 10 species.
Which of the following can be estimated from the sample for the invertebrates in the pond?
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Question 6
6.
Which of the following is NOT an example of an adaptation to help organisms acquire energy from their environment?
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Question 7
7.
In North America, native pollinators often increase the quantity and quality of crops of native plants that are insect-pollinated more effectively than European honeybees do. The most likely reason for the phenomenon is the native pollinators
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Question 8
8.
Which type of ecosystem services are resources such as timber and medicine?
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Question 9
9.
For which of the following reasons do small isolated islands have a greater rate of species extinction than larger, less isolated islands?
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Question 10
10.
Small populations of animals, such as those typically found on islands, are prone to extinction because
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Question 11
11.
The table below shows measurements of the beak size of a sample of ten ground finches on each of two islands in the Galápagos archipelago. The two islands are about ten kilometers apart, and all the birds are the same species. Given that beak size is genetically determined, which of the following hypotheses is the most likely explanation for the differences in data between the islands?
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Question 12
12.
The diagrams above show the range of tolerance for soil moisture content for two different species of a terrestrial invertebrate: Species 1 and Species 2. The ranges represented are for each species where it occurs alone. Soil moisture content is a limiting factor for both species. If populations of both species are placed together in a new location, which of the following diagrams represents the most likely actual (realized) ranges of the species’ distribution of individuals with respect to soil moisture content after five generations?
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Question 13
13.
Which of the following best shows the process of evolution?
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Question 14
14.
Which of the following can be used to assess the biological diversity of an area?
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Question 15
15.
Which of the following is most likely to be the direct result of a lack of genetic diversity in a food crop such as corn?
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Question 16
16.
Which type of ecosystem service are tourism and spiritual experiences?
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Question 17
17.
Which combination of factors would result in the highest biodiversity?
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Question 18
18.
The abiotic conditions under which a species can survive and reproduce is
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Question 19
19.
Which statement about ecological succession is correct?
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Question 20
20.
Which sequence of secondary succession would be likely to occur in abandoned farmland in the eastern United States?
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Question 21
21.
Which is NOT true regarding keystone species?
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Question 22
22.
Which condition does NOT define the fundamental niche of a species?
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Question 23
23.
A researcher collects samples of aquatic insects from a variety of streams, as shown in the table.
Which stream has the greatest species richness?
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Question 24
24.
A researcher collects samples of aquatic insects from a variety of streams, as shown in the table.
Scientists often use aquatic insect communities as indicators of water quality. Streams that are polluted can have low species evenness, and can be dominated by pollutant-tolerant taxa like midges and black flies. Based on this information, which of the four streams is most likely to be polluted?
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Question 25
25.
The consumption of mosquitoes by bats and the control of flooding provided by tropical forests in mountainous areas of Central America are examples of