Food Webs and Ecosystems Quiz

What is the main difference between a food chain and a food web?

• A. A food web shows only one path of energy flow

• B. A food chain is more complex than a food web

• C. A food web shows multiple interconnected food chains

• D. A food web only shows producers

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In a food web, what do arrows represent?

• A. The direction animals move

• B. The flow of energy between organisms

• C. The size of different animals

• D. The number of organisms

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Which of these is always at the beginning of every food web?

• A. Producers

• B. Primary consumers

• C. Secondary consumers

• D. Tertiary consumers

What would likely happen if all the grass in an ecosystem was destroyed by fire?

• A. Only the rabbits would be affected

• B. The ecosystem would remain unchanged

• C. The hawks would benefit

• D. All consumers would be negatively affected

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Which statement about food webs is true?

• A. Animals only eat one type of food

• B. Energy flows in many different directions

• C. Top predators are always eaten by something

• D. Producers eat other organisms

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In the Arctic marine food web, why are plankton considered producers?

• A. They eat small fish

• B. They are microscopic

• C. They can photosynthesize

• D. They swim in groups

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What makes an organism a tertiary consumer in a food web?

• A. It eats only plants

• B. Nothing eats it

• C. It eats primary consumers

• D. It makes its own food

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How do food webs demonstrate ecosystem interconnectedness?

• A. By showing that changes affect the whole system

• B. By showing only plant relationships

• C. By focusing on one type of animal

• D. By ignoring smaller organisms

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What would happen if foxes were removed from their ecosystem?

• A. The ecosystem would immediately improve

• B. Only the hawks would be affected

• C. The grass would decrease due to overgrazing

• D. Nothing would change

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Why is it important to protect biodiversity in ecosystems?

• A. So we can have more pets

• B. Each organism plays an important role

• C. To make food webs simpler

• D. Only to protect large animals

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