Limiting Factors in Biology

True or False: A lack of resources such as food, water, air, shelter, and space are called limiting factors.

• True

• False

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Which of these is NOT a limiting factor?

• overcrowding

• lack of food

• just enough food for all organism

• disease

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Limiting factors are sometimes helpful because they can keep the population from getting too large.

• True

• False

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What are some abiotic factors that could be limiting factors in the Potomac River ecosystem?

• Temperature, pollution, drought

• new predator, humans fishing

• Temperature, new species, new predator

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_____ factors restrict the numbers of organisms that can exist.

• Optimal

• Limiting

• Primary

• Tolerance

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What does a limiting factor do?

• makes a population grow large

• stops a population from growing large

• helps organisms adapt to abiotic factors

• provides geographical boundaries for migration

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In a forest ecosystem, which of the following is the best example of a limiting factor for a rabbit population?

• Squirrel Population

• Sunlight

• Grass available

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What is a limiting factor?

• anything that tends to be in small supply needed for life

• anything

• things that there is a lot of

• what was the question again?

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What is an example of a density-independent limiting factor?

• food

• parasites

• disease

• pollution

Define limiting factor.

• Something that is not needed for a reaction.

• How much light hits a certain area.

• Something that will always speed up a reaction proportional to its amount.

• Something that when in shortage, stops the rate of a reaction from being higher.

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