HW Week 22 Article 1

What is a heterotroph?

• An organism that makes its own food

• An organism that consumes other organisms for food

• An organism that uses sunlight to produce energy

• An organism that lives in isolation

Which of the following is an example of mutualism?

• A tick feeding on a dog

• A barnacle attached to a whale

• Ants protecting a tree while living in it

• A predator hunting its prey

What is the role of decomposers in an ecosystem?

• To produce energy-rich food molecules

• To consume other organisms for energy

• To break down dead organisms and recycle nutrients

• To compete for resources with other organisms

Which of the following describes a primary consumer?

• An organism that eats secondary consumers

• An organism that makes its own food

• An organism that eats producers

• An organism that decomposes dead matter

What is the main difference between photosynthesizers and chemosynthesizers?

• Photosynthesizers use sunlight, while chemosynthesizers use chemicals for energy

• Photosynthesizers are consumers, while chemosynthesizers are producers

• Photosynthesizers live in the ocean, while chemosynthesizers live on land

• Photosynthesizers eat plants, while chemosynthesizers eat animals

Explain the difference between a predator-prey relationship and a parasitic relationship. Include examples to support your answer.

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Analyze how the removal of a key predator, such as wolves in a forest ecosystem, might impact the balance of ecological interactions. Consider both direct and indirect effects.

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