KF Lesson 3 Review

What is the primary source of energy for the ecosystem pictured above?

• Grass and Green plants

• Hawks and Deer

• Tadpoles and Fish

• Sun

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In this food web, which of the following organisms eats the largest variety of different producers?

• Mouse

• Grasshopper

• Dragonfly

• Butterfly

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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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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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A diagram  that shows how much energy is available at each feeding level in an ecosystem is a(n)

• food chain
• food web
• water cycle
• energy pyramid

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Consumers obtain energy by

• eating other organisms
• eating plants
• photosynthesis
• nitrogen

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Grass is considered a ...

• consumer
• producer
• decomposer
• composers

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In this Food Web Pyramid Which type of consumer gets only 10% of the energy stored in plants?

• Herbivore
• Carnivore
• Omnivore
• Secondary Consumer

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Food chains show energy transfer between organisms. The size of a food chain can vary, yet there is a limit to the number of levels that a food chain can reach. Why is there a limit to the number of levels that a food chain can reach?

• Plants are not infinitely in the world

• Producers can only eat what is available

• Carnivores are too big to be eaten

• Energy is lost when you move up a trophic level

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Which of the following describes an interconnection of food chains in an ecosystem?

• Food chain

• Food web

• Energy pyramid

• Producer web

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