Biology Chapter 19 Quiz – Flashcards
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According to the logistic growth model, what happens to a population when the size of the population reaches carrying capacity?
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the growth rate is zero
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An unexpected freeze that kills a population of chipmunks is an example of ______.
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a density-independent factor
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If a population's growth rate decreases as the population size approaches carrying capacity, the population's growth follows a(n) ______ model.
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logistic
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In a population that is following a logistic growth pattern, what shape does the population's growth curve most closely resemble?
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S
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In an ideal, unlimited environment, a population's growth follows a(n) ______ model.
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exponential
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Non-native species can have important effects on biological communities by ______.
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doing all of the above
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Opportunistic species typically ______.
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have a large number of offspring
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Species that exhibit an equilibrial life history typically ______.
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have long lives
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The Endangered Species Act aims to help protect species that ______.
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are in danger of extinction
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The ecological footprint of the United States ______.
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shows that Americans consume a disproportionate amount of food and fuel
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Type I survivorship curves are typical of species that exhibit ______.
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few offspring and good parental care
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What is a population?
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a group of organisms that occupy the same general area
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Which of these best describes Type II survivorship?
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survivorship is constant over the lifespan
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Which of these best describes Type III survivorship?
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survivorship is high for the few individuals that survive to a certain age
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Which of these factors operates in a density-dependent manner?
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food supply
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Which of these is a characteristic of Type I survivorship?
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most individuals survive to older age intervals
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______ is the maximum population size that a particular habitat can support.
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carrying capacity
