Question 1

What role does the sun play in the flow of energy in an ecosystem?

Accepted Answer

The sun provides energy for producers like plants to make their own food through photosynthesis.

Answer

The sun is only important for heating the ecosystem.

Answer

The sun directly provides energy to all consumers.

Answer

The sun's energy is stored in rocks and minerals.

Question 2

In a food web, what is the primary direction of energy flow?

Accepted Answer

From producers to consumers

Answer

From herbivores to carnivores to producers

Answer

From decomposers to producers

Answer

From consumers to producers

Question 3

What happens to the energy as it flows through different levels of a food chain?

Accepted Answer

Energy decreases at each successive trophic level due to metabolic processes and heat loss.

Answer

Energy remains constant throughout the food chain.

Answer

Energy is completely recycled at each trophic level.

Answer

Energy gets created at each trophic level to keep the same amount.

Question 4

Which statement best describes the relationship between plants and animals regarding carbon dioxide and oxygen cycles?

Accepted Answer

Plants release oxygen and take in carbon dioxide during photosynthesis, while animals release carbon dioxide and take in oxygen during respiration.

Answer

Plants and animals both release carbon dioxide and oxygen equally.

Answer

Animals release oxygen while plants release carbon dioxide.

Answer

Only animals are involved in the carbon dioxide and oxygen cycle.

Question 5

What role do herbivores play in the cycling of matter in an ecosystem?

Accepted Answer

Herbivores consume plants, transferring energy and matter from producers to higher trophic levels.

Answer

Herbivores break down dead matter like decomposers.

Answer

Herbivores are producers that create their own food.

Answer

Herbivores convert sunlight directly into energy.

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