Population Ecology Review

Which of the following best describes the difference between exponential growth and logistic growth?

• Exponential growth shows rapid increase without limits, while logistic growth increases rapidly at first then stabilizes at a maximum limit.

• Exponential growth stabilizes at a maximum limit, while logistic growth shows rapid increase without limits.

• Both exponential growth and logistic growth stabilize at a maximum limit.

• There is no significant difference between exponential growth and logistic growth.

How does carrying capacity affect the shape of a logistic growth curve in a population graph?

• It causes the curve to decline sharply after reaching a peak.

• It has no effect on the shape of the curve.

• It causes the curve to plateau once the population reaches the carrying capacity.

• It causes the curve to oscillate around the carrying capacity.

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NGSS.MS-LS2-4

When a population size ________________ or remains steady, this is often a sign of a healthy population.

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NGSS.MS-LS2-1

NGSS.MS-LS2-4

If a population size begins to ________________ rapidly, this can be a signal that extinction is coming.

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NGSS.MS-LS2-1

NGSS.MS-LS2-4

Instead of counting each organism individually, ecologists use ________________ methods to estimate population sizes.

A population’s density describes how ________________.

• old the population is.

• crowded the population is.

• big the population is.

• fast the population is declining.

Which piece of information is used along with population size to calculate population density?

• area

• weight

• age

• location

For the following statement, fill in the blank with the correct word. A population's size ________ when the birth rate exceeds the death rate.

Which description best fits the shape of a graph curve indicating exponential growth and a graph indicating logistic growth?

• Exponential growth shows a constant rate of increase, while logistic growth starts slow, accelerates, and then slows down as it approaches a maximum.

• Exponential growth accelerates continuously, while logistic growth increases linearly over time.

• Both exponential and logistic growth curves indicate a steady, linear increase over time.

• Exponential growth begins slowly and then accelerates, whereas logistic growth shows a rapid increase that stabilizes at a threshold.

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NGSS.HS-LS4-2

Describe how you can recognize where the carrying capacity for a population occurs on a logistic growth curve.

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NGSS.HS-LS2-1