Unit 5: Population Dynamics

Which of the following best describes carrying capacity in an ecosystem?

• The minimum number of individuals needed for survival

• The maximum population an environment can sustain over time

• The rate at which new species enter an ecosystem

• The speed at which populations decrease

Which factor is NOT considered a biotic limiting factor?

• Disease

• Predation

• Soil quality

• Competition for resources

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What pattern of distribution occurs when individuals are evenly spaced?

• Random

• Clumped

• Uniform

• Scattered

Which statement about range of tolerance is correct?

• It only applies to plant species

• It refers to species' environmental limits

• It measures population growth only

• It determines migration patterns

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During a drought, what is the immediate effect on carrying capacity?

• It temporarily increases

• It remains unchanged

• It gradually increases

• It decreases

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Which factor would most likely cause emigration?

• Abundant food resources

• Optimal climate conditions

• Resource scarcity

• Low population density

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What is population density?

• The total number of species in an area

• The number of individuals in a given area

• The birth rate of a population

• The death rate of a population

Which is an example of an abiotic limiting factor?

• Predation

• Disease

• Water availability

• Competition

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NGSS.MS-LS2-1

How do biotic factors affect population size?

• Through climate change

• Through species interactions

• Through soil composition

• Through temperature changes

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What happens when a population exceeds carrying capacity?

• The environment expands

• Resources become more abundant

• Population growth increases

• Population decline occurs

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