Concept 3: Population Growth Ecology

A population of mice occupies a tree stump. For ten years, the population has been stable. Which of the following would likely cause the number of mice to begin to increase?

• An increase in predators

• A decrease in competition between the mice

• A increase in disease

• A decrease in mating season

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NGSS.MS-LS2-1

NGSS.MS-LS2-4

Which of the following is true of density-dependent limiting factors?

• They have a larger impact on small populations

• They impact big and small populations equally

• They have a larger impact on big populations

• They tend to be caused by abiotic factors.

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NGSS.MS-LS2-4

What type of population growth is shown in the graph up above?

• Carrying capacity growth

• Logistic growth

• Exponential growth

• Density dependent growth

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NGSS.MS-LS2-1

What pattern of growth will a population with limited resources show?

• Logistic

• Density-independent

• Exponential

• Density-dependent

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NGSS.MS-LS2-1

NGSS.MS-LS2-4

Conditions in the environment that impact the size of the population are called

• Populations

• Habitats

• Niches

• Limiting factors

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NGSS.MS-LS2-4

Based on the pie chart above, which events would harm the Georgia Black Bear population?

• Restriction on humans hunting bears

• Large scale forest fires

• Damming lakes and rivers

• Introduction of the bald eagle

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NGSS.MS-LS2-1

NGSS.MS-LS2-4

Which factor is density-dependent limiting factor on the population of a species?

• Unusual weather

• Natural disasters

• Predation

• Seasonal variation

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NGSS.MS-LS2-4