The Flow of Energy

How much energy is passed on to each trophic level in an energy pyramid?

• 10%

• 90%

• 50%

• 80%

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How do organisms get the energy they need?

• Plants get energy from fertilizers. Animals get energy from water.

• Plants get energy from the soil. Animals get energy directly from sunlight.

• Plants do not need energy because they do not move. Animals get energy from food.

• Plants use energy from sunlight to make sugar molecules. Animals get energy from eating other organisms.

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Which of these best explains why predators need plants, such as grass, in their ecosystem?

• Plants are a large part of their diets

• Plants provide safety for predators

• Plants break down the organisms that the predators eat

• Plants provide food for their animals that the predators eat

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What organisms are at the bottom of an energy pyramid?

• Producer

• Consumer

• Decomposer

• Scavenger

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Where do crickets get their energy?

• Cattails

• Marsh Grass

• Grasshoppers

• Shrews

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What form of energy is stored in food?

• heat

• light energy

• energy of motion

• energy in molecules

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Where is energy the highest in the food chain: grass, rabbit, hawk, bacteria

• grass

• rabbit

• hawk

• bacteria

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This is a picture of a

• food chain

• energy pyramid

• food web

• zoo

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This is a picture of a

• food chain

• zoo

• food web

• energy pyramid

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All energy originally comes from

• plants

• consumers

• predators

• sun

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