Unit 6 Review

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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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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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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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 photosynthesis, energy is stored in the chemical bonds of —

• Oxygen

• Carbon Dioxide

• Glucose

• Water

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

• Radiant

• Heat

• Electrical

• Wind

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Which organisms in the desert food web shown above represent the producers?

• Cacti and sagebrush

• Hawks and coyotes

• Ants and tarantulas

• Rats and snakes

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

• 
• 
• 
• 

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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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Analyze the positions of the eagle and the snake in the food web pictured above. Which of the following statements is correct?

• The eagle eats more types of organisms in the food web than the snake does.

• The eagle eats the same types of organisms as the snake does.

• The snake eats more types of organisms in the food web than the eagle does.

• The snake is eaten by the same types of organisms as the eagle is.

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