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Question

Population growth curve is sigmoid, if the growth pattern is

A
logistic
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B
geometric
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C
exponential
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D
accretionary
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Solution

The correct option is A logistic
If growth is limited by resources such as food, the growth of the population begins to slow as competition for those resources increases. The growth of the population eventually slows nearly to zero as the population reaches the carrying capacity (K) for the environment.
The result is an S-shaped curve of population growth known as the logistic curve or sigmoid curve.
When resources are unlimited, populations exhibit exponential growth, resulting in a J-shaped curve.

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