Unit 9 Flow of Energy

What are animals called in a food chain?

• Producers
• Heterotrophs

• Decomposers
• Plants

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What are plants called in a food chain?

• Producers

• Heterotrophs

• Decomposers
• Consumers

What is a herbivore?

• an animal that gets energy from eating other animals
• an organism that gets energy from eating only plants
• an animal that gets energy by eating both plants and other animals
• an animal that eats only herbs

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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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Choose the correct order found in an ecosystem.

• Producer - Plant – Primary Consumer – Secondary Consumer

• Producer – Tertiary Consumer – Secondary Consumer – Primary Consumer

• Producer – Primary Consumer – Secondary Consumer - Tertiary Consumer

• Secondary Consumer – Tertiary Consumer – Primary Consumer – Producer

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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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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 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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Analyze the food, which animal receives the most energy originally produced by the plants in the food web?

• Rabbit

• Frog

• Owl

• Snake

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A student was asked to redesign the food web shown into a food pyramid. Which organism would have the least total energy available?

• cacti
• roadrunners

• coyotes

• bacteria

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