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23 Cards in this Set
- Front
- Back
Which of the following is correct? |
allopatric populations look the same and use the same resources |
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Which hypothesis states that new species are prevented from entering a community by the existing species? |
inhibition hypothesis |
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Which statement is true about the effect of stress on a population? |
plants compete more in an ideal environment |
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Which of the following pairs is NOT a mutualism? |
ant - yucca plant |
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What conclusion can be drawn from Gause's experiments on interspecific competition in Paramecium? |
when two populations of Paramecium use the same limiting resource, they cannot coexist long term |
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Succession results from all the following EXCEPT |
stasis |
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What is/are the factor(s) involved in the optimal foraging theory? |
energy needed to capture food and energy that the food provides |
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An example of an obligatory mutualism involves which two organisms? |
acacia trees and ant colonies |
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The Monarch butterfly has an undesirable taste and the Viceroy butterfly has a selective advantage because is looks like the Monarch. This is an example of which process? |
Batesian mimicry |
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A milkweed plant discourages consumption by herbivores by |
excuding a toxic sap |
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An example of commensalism involves which two organisms? |
cattle egrets and cattle |
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In a study examining the growth of coral in a portion of the Great Barrier Reef, which conclusion concerning alterations in the coral colonies is the most accurate? |
changes in the colony are due to both external and internal factors |
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The intermediate disturbance hypothesis posits which of the following? |
species richness is greatest in communities that experience frequent moderate disturbances |
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In the experiment involving bluegill sunfish and their choice of diet, when equal numbers of small, medium, and large Daphnia are present, |
the sunfish prefer large Daphnia |
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How can predators influence the species richness and structure of communities? |
reducing the population sizes of their prey |
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Colonization rates from one habitat patch to another are _____ and extinction rates within habitat patches are _______ in contiguous habitats than on islands. |
higher; lower |
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What conclusion can be drawn regarding a community in which many species are involved in a food web? |
It is more stable since organisms have more than a single food source |
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A panda bear who consumes a diet primarily of eucalyptus leaves would be considered a |
specialist and a herbivore |
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An example from the text contrasts two forests, each with 10 species and a total of 50 trees. The first forest has 39 of the 50 trees representing the dominant species. The second forest has 2 of each of the 10 different species. What conclusion can be drawn regarding these two forests? |
The second forest is more diverse than the second |
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The relationship between species richness and recovery from natural disturbances can best be summarized as follows: |
communities with more diversity recover more rapidly from natural disturbances |
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Which statement best summarizes the connection between islands and species richness? |
the factors influencing species richness on an island are distance from the mainland and island size |
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Which of the following is NOT a bias that could be encountered when investigating the role of competition in a community? |
the assumption that evolution never occurs |
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High species richness in the tropics is probably a result of all of the following EXCEPT |
seasonality |