Select whether each statement refers to a density-dependent or density-independent factor for population growth.When a prey species becomes more common, predators can more easily find it and kill relatively more. This would be a factor that limits population growth.A hurricane would be a factor that would impact population size.A limit to population growth that has greater influence as population size increases such as a parasite that can more easily jump from host to host would be a factor.
Question
Select whether each statement refers to a density-dependent or density-independent factor for population growth.When a prey species becomes more common, predators can more easily find it and kill relatively more. This would be a factor that limits population growth.A hurricane would be a factor that would impact population size.A limit to population growth that has greater influence as population size increases such as a parasite that can more easily jump from host to host would be a factor.
Solution
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When a prey species becomes more common, predators can more easily find it and kill relatively more. This would be a density-dependent factor that limits population growth. This is because the effect of the factor (predation) increases as the population density (number of prey) increases.
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A hurricane would be a density-independent factor that would impact population size. This is because the effect of the factor (the hurricane) is not related to the population density. It would cause the same amount of damage regardless of how many individuals are in the population.
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A limit to population growth that has greater influence as population size increases such as a parasite that can more easily jump from host to host would be a density-dependent factor. This is because the effect of the factor (parasitism) increases as the population density (number of hosts) increases.
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