Understanding Population Dynamics and Growth

What is the definition of population density?

• The number of individuals within a specific area.

• The way individuals are spread throughout their habitat.

• The maximum population size an environment can support.

• The number of births and deaths in a population.

What happens to a population when the birth rate is greater than the death rate?

• The population declines.

• The population remains stable.

• The population grows.

• The population becomes extinct.

Which of the following is a density-independent factor?

• Competition

• Predation

• Earthquake

• Disease

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NGSS.MS-ESS3-2

What shape does a population growth curve take when it exhibits exponential growth?

• S-shaped curve

• J-shaped curve

• U-shaped curve

• L-shaped curve

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NGSS.MS-LS2-4

NGSS.MS-LS1-5

What is carrying capacity?

• The number of individuals that can immigrate into a population.

• The maximum population size an environment can support.

• The rate at which a population grows.

• The number of offspring produced by a species.

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NGSS.MS-LS2-4

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Which of the following is a characteristic of r-selected species?

• Long lifespan

• Few offspring with high parental care

• Short lifespan with many offspring

• Stable population size

What type of growth pattern is shown when a population's growth slows and levels off?

• Exponential growth

• Logistic growth

• Linear growth

• Cyclical growth

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NGSS.HS-LS2-6

Which factor is density-dependent?

• Flood

• Hurricane

• Disease

• Drought

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NGSS.MS-LS2-4

What is the effect of emigration on a population?

• It increases the population size.

• It decreases the population size.

• It stabilizes the population size.

• It has no effect on the population size.

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NGSS.MS-LS2-4

Which of the following is an example of a K-selected species?

• Jellyfish

• Insects

• Elephants

• Frogs