Interdependence

Animals help to scatter the ____________ of plants.

• roots

• leaves

• seeds

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Which of these are producers?

• Microorganisms

• Animals

• Plants

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________________ feed on dead plants and animals.

• Scavengers

• Carnivores

• Decomposers

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Which of the following would be the most likely effect, if there were a sudden increase in the cricket population?

• There would be a decrease in the small bird population.

• There would be a decrease in the grass/flowers population.

• There would be a decrease in the mice population.

• There would be an increase in the grass/flowers population.

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Why is interdependence important in ecosystems?

• It allows ecosystems to be unaffected by changes

• It ensures that no species have any interaction

• It helps organisms to survive by relying on each other for food, shelter, and other needs

• It makes ecosystems simpler

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What would most likely result if all plants in an area were destroyed?

• Consumer populations would increase because more sunlight would reach the ground.

• Decomposer populations would increase because more sunlight would reach the ground.

• Consumer populations would decrease because plants provide them with water.

• Consumer populations would decrease because plants provide them with energy.

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If a population of gazelle decrease, the population of cheetahs will...

• Decrease

• Increase

• Stay the same

• Cheetahs don't eat gazelle

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What is a food web?

• A single pathway of feeding relationships among organisms in an ecosystem.

• A system that recycles nutrients in an ecosystem.

• A complex network of feeding relationships among organisms in an ecosystem.

• A method of decomposing organic material.

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Which organism do the owl and the weasel compete for in the food web?

• Hawk

• Spider

• Grasshopper

• Shrew

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Which two organisms have a producer consumer relationship?

• grasshopper and shrew

• shrew and hawk

• shrew and frog

• marsh grass and grasshopper

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