Limiting Factors in Ecosystems

All the organisms of a particular type living in the same place at the same time is called a _______.  An example is a herd of deer.

• population
• community
• resource
• ecosystem

How does the coyote act as a limiting factor on a population of birds that it consumes?

• coyotes typically have 10 offspring per year.

• coyotes are predators that remove birds from the population.

• coyotes create habitat for birds

• coyotes pee on plants to help them grow

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This factor describes how long it takes an organism to reproduce, how many offspring an organism has, and how long it takes an organism to reach maturity.

• reproductive environment

• climate

• reproductive potential

• reproductive power

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Which is NOT a way that reproductive potential limits a population size?

• Organisms may have few offspring each time they reproduce.

• Organisms may not reproduce frequently.

• Organisms may not have the right environment to reproduce.

• Organisms may take a long time to reach reproductive maturity.

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Things or organisms that regulate or limit the size of a population, for example predators or climate are known as __________.

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Temperature, light, air, water, and soil are all  _____  parts of the environment

• alive
• biotic 
• abiotic
• living

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What happens when an environment reaches its carrying capacity?

• Limiting factors will cause populations to stay stable or decrease.

• Resources such as food, water, and space will be unlimited

• Populations will increase

• Species will go extinct

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This graph shows the growth of a population. When the population reached 1000, we can infer that it reached the _____________ of the environment.

A living or once-living organism in an ecosystem is a

• population

• biotic factor

• abiotic factor

• community

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Which of the following is an example of competition for resources?

• male elephant seals fight to see who gets to reproduce

• bunnies and rats are both eating the vegetables in my garden

• cockroaches have thousands of babies every year

• squirrels and woodpeckers fight to get prime spots in a tree

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