Energy Flow through Ecosystems

All energy on Earth comes from

• food.

• the sun.

• chemicals.

• non-living things.

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Deep sea vent bacteria get their energy from

• eating other bacteria.

• releasing sulfur.

• photosynthesis.

• chemosynthesis.

The efficiency of energy transfer from a lower trophic level to the next highest level is roughly

• 1%
• 10%
• 100%
• 1000%

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An organism that gets energy from breaking down dead organisms, non-living material or waste is a(an) ___________.

• producer
• consumer
• decomposer
• autotroph

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The process of plants using energy from the sun to create the first trophic level is called?

• Photosynthesis
• Chemosynthesis
• Cellular Respiratation
• Primary Producers

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What are the reactants in Photosynthesis?

• Sun, CO2, glucose

• glucose and oxygen

• sun, carbon dioxide, water

• water, glucose

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What are the products of photosynthesis?

• water and carbon dioxide
• oxygen and glucose
• oxygen and carbon dioxide
• oxygen and water

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An autotroph can also be called a

• animal.

• consumer.

• heterotroph.

• producer.

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An example of a producer is a

• fungus.

• animal.

• plant.

• person.

Consumers breakdown the macromolecules of the organisms they have eaten to release ATP in a process called

• photosynthesis.

• chemosynthesis.

• cellular respiration.

• ATP liberation.

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