Exploring Food Chain Dynamics

Which of the following best describes the role of producers in a food chain?

• They break down dead organisms.

• They create their own food through photosynthesis.

• They consume other organisms for energy.

• They are at the top of the food chain.

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DOK Level 2: Skill/Concept

Explain how energy flows through an ecosystem starting from producers.

• Energy flows from decomposers to producers to consumers.

• Energy flows from consumers to producers to decomposers.

• Energy flows from producers to consumers to decomposers.

• Energy flows from decomposers to consumers to producers.

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DOK Level 2: Skill/Concept

Why are decomposers important in an ecosystem? Provide reasoning and evidence to support your answer.

• They produce energy for the ecosystem.

• They recycle nutrients back into the soil.

• They are primary consumers.

• They are at the top of the food chain.

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DOK Level 3: Strategic Thinking

According to the food chain: Grass → Cricket → Frog → Snake

How are the Frog and the Grass connected?

• The frog eats the cricket for energy, and the cricket depends on the grass for energy

• The frog prepares food for the grass using the sun, and the grass gives water to the frog

• The frog and the grass both use the sun to make their own food

• the frog and the grass both use the cricket for energy

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DOK Level 2: Skill/Concept

Analyze the impact of removing a top predator from a food chain. What could be the potential consequences?

• Increase in producer population.

• Decrease in primary consumer population.

• Overpopulation of secondary consumers.

• No significant impact.

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DOK Level 3: Strategic Thinking

Which of the following organisms is a decomposer?

• Grass

• Rabbit

• Mushroom

• Fox

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DOK Level 2: Skill/Concept

Compare and contrast the roles of primary and secondary consumers in a food chain.

• Primary consumers eat producers, while secondary consumers eat primary consumers.

• Primary consumers eat decomposers, while secondary consumers eat producers.

• Primary consumers eat secondary consumers, while secondary consumers eat decomposers.

• Primary consumers eat producers, while secondary consumers eat decomposers.

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DOK Level 3: Strategic Thinking

What is the main source of energy for producers in a food chain?

• Water

• Soil

• Sunlight

• Decomposed material

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DOK Level 2: Skill/Concept

Evaluate the role of decomposers in maintaining the balance of an ecosystem. Provide a detailed explanation.

• Decomposers help in the growth of producers by recycling nutrients.

• Decomposers consume primary consumers.

• Decomposers are not essential for the ecosystem.

• Decomposers produce energy for secondary consumers.

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DOK Level 3: Strategic Thinking

Click on the image to make it larger-- Choose the living things that are producers...

• wildflowers

• rabbit

• snake

• grass

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NGSS.MS-LS2-3