Multiple Choice
Which graph best illustrates a population that was growing and has reached its carrying capacity?
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50. Population Ecology
Introduction to Population Growth Models
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Which of the following best describes logistic growth in a population?
A
Population growth slows as it approaches carrying capacity, forming an S-shaped curve.
B
Population grows at a constant rate, resulting in a J-shaped curve.
C
Population size decreases rapidly due to limited resources.
D
Population growth is unaffected by environmental resistance.
Verified step by step guidance1
Understand the concept of logistic growth: Logistic growth occurs when a population's growth rate decreases as it approaches the carrying capacity of the environment. This is due to limited resources and environmental resistance.
Identify the shape of the logistic growth curve: Logistic growth is represented by an S-shaped curve (sigmoidal curve), which starts with exponential growth, slows down as resources become limited, and eventually levels off at the carrying capacity.
Contrast logistic growth with exponential growth: Exponential growth results in a J-shaped curve, where the population grows at a constant rate without any environmental resistance or resource limitations.
Analyze the options provided: Eliminate options that describe exponential growth (J-shaped curve), rapid population decline, or growth unaffected by environmental resistance, as these do not align with the characteristics of logistic growth.
Select the correct answer: The option that states 'Population growth slows as it approaches carrying capacity, forming an S-shaped curve' best describes logistic growth.
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