7th Ecology, Ecosystems, Cycles, Body Quiz

What is the primary role of producers in an ecosystem?

• They consume other organisms for energy.

• They decompose dead organisms.

• They produce energy-rich compounds through photosynthesis.

• They regulate the population of other species.

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Which of the following is an example of a consumer?

• Oak tree

• Mushroom

• Wolf

• Sunflower

What do decomposers do in an ecosystem?

• Capture sunlight to make food

• Break down dead material and waste into simpler substances

• Prey on other animals

• Produce oxygen through photosynthesis

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In a food chain, what is the typical flow of energy?

• From decomposers to producers to consumers

• From producers to consumers to decomposers

• From consumers to producers to decomposers

• From decomposers to consumers to producers

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Which level of an energy pyramid contains the most energy?

• Top carnivores

• Primary consumers

• Producers

• Decomposers

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What distinguishes a food web from a food chain?

• A food web consists of only one linear path of energy flow.

• A food web shows multiple feeding relationships among organisms.

• A food chain includes abiotic factors, unlike a food web.

• A food chain shows the energy flow through water, while a food web does not.

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Which organism would be classified as a primary consumer in a food chain?

• A grasshopper eating grass

• A snake that eats a frog

• A hawk that eats a mouse

• A wolf eating a deer

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How do producers obtain energy?

• By eating other organisms

• Through the process of photosynthesis

• By decomposing organic matter

• By absorbing nutrients from the soil

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What role do decomposers play in the recycling of nutrients?

• They convert sunlight into chemical energy.

• They consume living plants and animals.

• They break down dead organisms, returning nutrients to the soil.

• They capture and store carbon dioxide from the atmosphere.

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How does energy flow in an energy pyramid?

• From the top to the bottom

• From the bottom to the top

• Horizontally among organisms at the same level

• In a circular motion

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