Predator Prey Relationship

The owl receives energy from which organisms?

• grasshopper and mouse

• mouse and rabbit

• rabbit and butterfly

• butterfly and frog

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In this tundra food web, if grasses were removed what would happen to the sustainability of the ecosystem?

• There would be an overpopulation of arctic hares and lemmings.

• Polar bears would move to a new ecosystem.

• The ecosystem would collapse, because it lost its main producer.

• Wildflowers would die out from the ecosystem.

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What happens to the prey population when the number of predators increases?

• it increases

• it decreases

• It stays the same

• The predator would never increase in population.

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When the number of prey species increases _____

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Which prey is the hawk most likely to eat?

• frog

• mouse

• snake

• owl

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When predator numbers decrease, prey numbers ____________ because fewer of them are being consumed.

• decrease

• increase

• stay the same

• divide in half

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Predator-prey interactions are an important biotic factor for both predator and prey populations.

• True

• False

• Tom Brady

• Frolic

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One relationship between organisms is that of predator-prey. Which of the following is the best description of a predator?

• An organism that participates in symbiosis

• An organism that eats

  another organism.

• An organism that is eaten by

  another organism

• An organism that benefits at the expense of another organism.

Predation is similar to _______________ in that both types of relationship benefit one of the interacting species while the other is harmed.

• commensalism

• competition

• mutualism

• parasitism

In a predator-prey relationship, what typically happens to the predator population if the prey population suddenly decreases?

• A) It increases

• B) It decreases

• C) It stays the same

• D) It fluctuates randomly

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