Ecosystems: Relationships Review

During a drought, animals compete for limited water. What type of relationship is this?

• Mutualism

• Commensalism

• Competition

• Parasitism

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A worm lives in a dog’s intestines and makes it sick. What is this relationship?

• Mutualism

• Parasitism

• Commensalism

• Competition

Two deer eating the same bush is an example of:

• Abiotic interaction

• Mutualism

• Biotic competition

• Symbiosis

Which is an abiotic factor in a desert?

• Cactus

• Lizard

• Rainfall

• Ant

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What animal would limit the hare population in the Arctic?

• Lemmings

• Polar bears

• Reindeer

• Owls

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What happens to prey when predator numbers drop?

• Prey disappears

• Prey increases

• Prey stays the same

• Prey shrinks

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Cleaner shrimp eat parasites off fish. Both benefit. What is this relationship?

• Mutualism

• Commensalism

• Competition

• Parasitism

Select ALL abiotic factors:

• Plant life

• Rock type

• Sunlight

• Oxygen in water

• Frog population

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Which list includes only abiotic factors?

• Fish, coral, seaweed

• Wind, temperature, sunlight

• Trees, soil, water

• Algae, birds, nutrients

How is an ecosystem different from abiotic materials?

• It's only abiotic

• It's all living

• It's both living and nonliving

• It changes daily

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