Science Fundamentals Ch. 10

The organisms living in an area and the nonliving features of that environment form __________.

• an ecosystem

• competition

• a symbiotic relationship

• its limiting factors

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Which of the following does a food web model?

• Producers use sunlight.

• Abiotic factors affect populations.

• Energy moves through an ecosystem.

• Ecosystems change over time.

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Energy flows through an ecosystem in which form?

• water

• food

• heat

• sunlight

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How do decomposers obtain energy in an ecosystem?

• through photosynthesis

• through symbiosis

• from breaking down dead organisms

• from the atmosphere

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Consumers are organisms that cannot __________.

• photosynthesize

• reproduce

• survive

• evaporate

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Which of these makes its own food?

• soil

• water

• carnivores

• producers

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A symbiotic relationship that benefits both species is called __________.

• commensalism

• parasitism

• predation

• mutualism

All the interactions in which an organism takes part make up its _______.

• community

• population

• niche

• ecosystem

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Your sick puppy is diagnosed with roundworms. What type of symbiotic relationship do the puppy and the roundworms have?

• parasitism

• commensalism

• mutualism

• cooperative

Which limits population size?

• mutualism

• symbiosis

• competition

• commensalism

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