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| In any given population, as N approaches K, which of the following is predicted by the logistic model of population growth? |
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| the growth rate will approach zero |
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| Reasons population growth declines as population size approaches the carrying capacity |
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-competition for resources increases
-predation rates increase
-disease rates increases |
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| In terms of local ecosystems, why is the invasion of the Mediterranean strain of algae Caulerpa taxifolia a problem? |
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| It is a poor food source, and herbivores will lose their native food supply |
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| When the Mediterranean strain of Caulerpa taxifolia was discovered in California waters, which of the following actions was taken first to control its spread? |
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| All affected areas were treated with a bleach solution, and the dead flora and fauna was removed |
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| Logistic population growth |
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r=per capita rate of increase, K=carrying capacity, N=population size
G=rN*(K-N)/K |
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| In order for competitive exclusion to occur, there must be: |
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| asymmetric competition and complete niche overlap |
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| Intraspecific competition is one of the factors which can give rise to: |
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| logistic growth, where N levels off at or near K |
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| Which of the following measurements or qualities does not make sense to apply to the makeup of a community? |
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Carrying capacity
Things that do , food web structure, patterns of niche overlap, species diversity |
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| In the set of interactions we read about surrounding chili pepper community interactions, who were the predators on chili seeds and fruits |
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| cactus mice and individuals of the Fusarium fungus |
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| An induced defense against predation differs from a constitutive defense, because |
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| induced defenses are produced only when some cue indicates clear risk of predation |
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| In order for competition to be taking place, the individuals who are competing: |
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| must be experiencing a reduction in fitness, relative to what they would have in the absence of the competitor |
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| The competitive exclusion principle states that: |
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| two species with completely overlapping niches cannot coexist |
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| Per capita rate of increase is denoted by the _____ minus the ______of a population |
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| birth rate minus the death rate |
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| the maximum number of individuals in a population that can be supported in a particular habitat over a sustained period of time |
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