Ecosystems and Interdependence

If a disease strikes the snake population in the food chain shown, what will be the initial effect on the populations of hawks and rabbits?

• The populations of hawks and rabbits will decrease.

• The populations of hawks and rabbits will increase.

• The population of hawks will increase. The population of rabbits will decrease.

• The population of hawks will decrease. The population of rabbits will increase.

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In the stable food chain shown here, what would you expect to happen initially if you were to suddenly double the population of rabbits?

• The populations of the other three species would also increase.

• The populations of the other three species would decrease.

• The grass population would decrease. The snake population and hawk population would increase.

• The grass population and hawk population would decrease. The snake population would increase.

The role of plants in a food web is 

• consumer
• decomposer
• predator
• producer

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What event within the food chain might lead to the graph shown below?

• A disease in the population of rabbits.

• A disease in the population of snakes.

• A disease in the population of hawks.

• It is impossible to tell which of the above occurred.

What happens when the number of producers shrinks?

• The number of consumers increase.

• The number of decomposers increase.

• The number of consumers decrease.

• The number of producers increase.

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What is a primary consumer?

• An organism that eats meat.

• An organism that eats plants.

• An organism that eats dead things.

• An organism that makes it own food.

What is an apex predator?

• An organism that eats plants.

• An organism that has no predators.

• An organism that eats dead things.

• An organism that eats meat.

A collection of organisms that interact together, as well as with all of the nonliving aspects of the environment is known as a(n)?

• Population
• Community
• Habitat
• Ecosystem

A collection of organisms that belong to different populations but all live in the same area and interact with one another is called a(n)?

• Population
• Ecosystem
• Community
• Biome

Two or more members of a particular species living and interacting in the same area

• Community
• Population
• Organisms
• Biosphere

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