Which process is used by most producers to turn sunlight into food energy?

• photosynthesis

• cellular respiration

• transpiration

• evaporation

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Which of these is a producer?

• Moth

• Mushroom

• Fern

• Cheetah

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Which organisms obtain energy from dead or decaying matter? Select two options.  

groundhogs

daisies

earthworms

bacteria

humans

phytoplankton

• Groundhogs

• Daisies

• Earthworms

• Humans

Maggots get their energy by breaking down dead and decaying animals. What are maggots?

• Autotrophs

• Producers

• Decomposers

• Heterotrophs

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The diagram shows a basic food chain.

Which is the primary consumer?

• Rabbit

• Grass

• Snake

• Hawk

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The diagram shows a food web.

What would most likely happen to the food web if the amount of grass drastically decreased?

• Only the rabbit would be affected.

• The mouse and grasshopper would be affected.

• The grasshopper, mouse, and shrew would be affected.

• The entire food web would be affected.

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Nida draws a diagram with insects, birds, and mice. She shows the mice eating grass; hawks, snakes, and toads eating the insects; and foxes, hawks, and snakes eating the birds and mice. The snakes are also eating the toads.

 

Which best describes the diagram?

• Pyramid

• Food Chain

• Food Web

• Trophic Level

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The diagram shows a food web.

Which is the producer?

• Grass

• Grasshopper

• Mouse

• Fox

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Which statement best contrasts food chains and food webs?

• Food webs show a single path of energy in an ecosystem, and food chains show all the overlapping food chains in that ecosystem.

• Food chains show a single path of energy in an ecosystem, and food webs show all the overlapping food chains in that ecosystem.

• Food webs show the path of energy in an ecosystem, and food chains show the path of nutrients in that ecosystem.

• Food chains show the path of energy in an ecosystem, and food webs show the path of nutrients in that ecosystem.

Approximately ___% of the available energy is passed from organisms at one trophic level to organisms at the next trophic level.  

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