Unit 6 Test Review: Flow of Energy

When energy is passing through a food web, some of the energy is lost as heat. Approximately how much of the energy is passed from one level to the next?

• 1%

• 10%

• 50%

• 90%

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Which of the following statements best describes the flow of energy in the energy pyramid above?

• As you go higher in the pyramid, the amount of energy increases.

• There is less energy in a producer level than a consumer level.

• There is no energy above the level of producers in the system.

• Each group receives only a small amount of the energy from the level below it.

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What kind of energy is necessary to initiate the process of photosynthesis?

• Radiant

• Heat

• Electrical

• Wind

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A student diagrammed a food web of algae, snails, ducks, frogs, and snakes that she observed during a summer trip to her grandparents' farm.

What is the correct arrangement of the above organisms on an energy pyramid?

• 
• 
• 
• 

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NGSS.MS-LS2-3

The diagram shows a desert food web. How will a large decrease in the number of rats impact the food web shown above?

• There will be an increase in the number of ants, tarantulas, and snakes.

• There will be an increase in the number of snakes, coyotes, and hawks.

• There will be a decrease in the number of snakes, coyotes, and hawks.

• There will be a decrease in the number of cacti and sagebrush plants.

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Which of the following organisms can undergo photosynthesis?

• Animals and Plants

• Animals and Fungi

• Plants and Fungi

• Plants only

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What do the arrows represent in the diagram of a food chain?

• The order of size of organisms in the ecosystem

• The importance of organisms in the chain

• The direction of energy flow through organisms

• The energy increases as you move from left to right

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NGSS.MS-LS2-3

Analyze the food web. Which animal receives the MOST energy originally produced by the plants in the food web?

• Rabbit

• Frog

• Owl

• Snake

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What happens to the solar energy absorbed by plants during photosynthesis?

• It is recycled by plants and returned to the atmosphere.

• It is converted into oxygen and glucose.

• It is stored as heat within the plant for cellular functions.

• It is transformed into chemical energy.

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During the process of photosynthesis —

• light energy is converted to chemical energy

• chemical energy is transformed to mechanical energy

• thermal energy is changed to chemical energy

• solar energy is transformed to mechanical energy

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