(24-25) 3.3 Energy Flow in Ecosystems

Where does the energy start in this food chain?

• plant

• sun

• deer

• wolf

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Which best describes what a food chain shows you?

• energy flow through an ecosystem

• food flowing through an ecosystem

• consumers going into other consumers

• who eats who

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In the energy pyramid here, how much of the energy in each level gets lost as heat or used by the organism for survival?

• 80%
• 90%
• 10%
• 20%

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What trophic level has the most energy?

• autotrophs

• heterotrophs

• omnivores

• consumers

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What is this called?

• food web

• food chain

• abiotic factors

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What is this called?

• food web

• food chain

• abiotic factors

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In a food web, arrows point at:

• who gets energy

• who gets eaten

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What does a food web represent?

• all connections of energy flow throughout all organisms in a ecosystem

• the specific ways that mutualism is carried out

• a single pathway or energy flow between organisms

• how carnivores get their food

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Which organism receives the least amount of energy from the producer?

• owl

• grasshopper

• lilypad

• mouse

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___% of energy is passed from one organism to another.

• 1

• 10

• 100

• 1000

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