HMH Unit 3, Lesson 3

What does a food web show?

• A food web displays where a species lives in an ecossytem.

• A food web shows the weather patterns in an area.

• A food web shows the energy flow among organisms in an ecosystem.

• A food web shows the types of plants in an ecosystem.

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Which organism from the diagram gets its energy directly from the sun?

• Frog

• Snake

• Eagle

• Grass

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Which organism from the diagram is both predator and prey?

• Frog

• Grasshopper

• Eagle

• Grass

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What will happen to the frogs if there are fewer snakes?

• They will initially increase

• They will initially decrease

• They will stay the same

• They will become sick

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What will happen to the eagles if there are fewer snakes?

• They will initially increase

• They will initially decrease

• They will stay the same

• They will become sick

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Scientists have observed an increase in the deer population in a forest over time. Which changes to the food chain could explain the increase in the number of deer?

• Decrease in predators or increase in food availability.
• Increase in hunting activities
• Decrease in food sources
• Increase in predator population

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Which of the following is an example of a producer?

• Plants
• Bacteria
• Fungi
• Deer

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Which of the following is an example of a decomposer?

• Plants
• Sun

• Bacteria
• Deer

What is the original source of energy in every food chain?

• The sun
• Water
• Soil
• Air

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An organism that needs to eat other organisms to get energy is known as a:

• Autotroph
• Producer
• Consumer
• Mutualist

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