Understanding Energy Flow in Ecosystems: Roles of Producers, Consumers, and Decomposers

Exit Ticket · Grade 5 · Science · ngss

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Short Answer Questions

• Q1. During the card sort, you grouped organisms into producers, consumers, and decomposers. Choose one organism from your food chain and explain how energy reaches it from the sun.

• Q2. When your group constructed the food chain, you labeled each organism's role. Explain what would happen to the energy flow in your food chain if all the decomposers were removed.

Reflection

• Think back to the card sort and food chain activity you completed today. What part of how energy flows through an ecosystem feels clear to you, and what is one question you still have that you would like to understand better?

Multiple Choice

• Q1. In the food chains your class discussed, producers are always the starting point. Why do food chains begin with producers?

  • Producers eat the most food in an ecosystem.
  • Producers capture energy from the sun and convert it into food.
  • Producers get their energy by breaking down dead organisms.
  • Producers receive energy from primary consumers.

  Answer: Producers capture energy from the sun and convert it into food.

• Q2. During the card sort, a mushroom was placed in the decomposer group. What is the role of decomposers in the energy flow of an ecosystem?

  • They produce energy from sunlight for other organisms to use.
  • They hunt and eat primary consumers to get energy.
  • They break down dead organisms and return nutrients to the soil.
  • They store energy in their leaves for consumers to eat.

  Answer: They break down dead organisms and return nutrients to the soil.

• Q3. In the food chain your group built, a grasshopper eats grass and a frog eats the grasshopper. What role does the grasshopper play?

  • Producer
  • Primary consumer
  • Secondary consumer
  • Decomposer

  Answer: Primary consumer

• Q4. As energy flows from one organism to the next in a food chain, what happens to the amount of available energy?

  • It stays exactly the same at each level.
  • It increases as it moves to larger organisms.
  • It decreases because some energy is lost at each level.
  • It doubles each time an organism is eaten.

  Answer: It decreases because some energy is lost at each level.

• Q5. A hawk eats a snake, which ate a mouse, which ate seeds. Based on the food chains you built in class, what is the hawk's role?

  • Producer
  • Primary consumer
  • Secondary consumer
  • Decomposer

  Answer: Secondary consumer

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