Unit 6 Flow of Energy in Ecosystems

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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What process converts radiant energy inot chemcial energy?

• respiration

• phototropism

• combustion

• photosynthesis

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The arrows in a food chain or web represents what?

• They point to the organism that is being eaten.
• It shows how sunlight flows within an ecosystem.
• They show what direction the energy is flowing between organisms. 
• They represent how water is transferred within a habitat.

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An energy pyramid represents what?

• How much sunlight is available for the ecosystem to use. 
• How much energy a particular organism needs. 
• How much energy is needed to build a pyramid. 
• The amount of energy available to the next 'feeder' in a food web.

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How much energy is available to be passed on to the next level in a food web?

• 100%

• 10%

• 50%

• 75%

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Which type of energy is formed during the process of photosynthesis?

• chemical

• radiant

• thermal

• kinetic

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The diagram below 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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The diagram shows a desert food web.

Which organisms above represent the producers?

• Cacti and sagebrush

• Hawks and coyotes

• Ants and tarantulas

• Rats and snakes

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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 theeagle does.

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

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

• rabbit

• frog

• owl

• snake

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