Trophic Levels and The Transfer of Energy

Which of the following best describes the transfer of energy in an ecosystem?

• A. Energy flows from producers to consumers to decomposers.

• B. Energy flows from decomposers to consumers to producers.

• C. Energy flows from consumers to producers to decomposers.

• D. Energy flows from producers to decomposers to consumers

A food chain describes:

• A. How organisms find mates.

• B. How energy and nutrients pass from one organism to another.

• C. The different types of food organisms eat.

• D. The habitats of different organisms.

What is a trophic level?

• A. The level of biodiversity in an ecosystem.

• B. The position an organism occupies in a food chain.

• C. The process of photosynthesis in plants.

• D. The amount of water available in an ecosystem.

Which is NOT true about organisms at the highest trophic level in an energy pyramid?

• A. They are apex consumers.

• B. They can be meat and vegetable eater.

• C. They get the least amount of energy.

• D. They get the greatest amount of energy.

Why is it important to maintain the ecological balance in an ecosystem?

• A. To prevent the extinction of species

• B. To ensure a stable food supply

• C. To maintain biodiversity

• D. All of the above

A primary consumer eats secondary consumers.

• A. TRUE

• B. FALSE

• C. Sometimes True, sometimes False

• D. A producer

A food chain shows a single pathway of energy transfer in an ecosystem.

• A. TRUE

• B. FALSE

• C. Sometimes True, sometimes False

• D. An energy

Producers like plants make their own food using energy from the sun.

• A. TRUE

• B. FALSE

• C. Sometimes True, sometimes False

• D. Consumers

The 10% rule states that most of the energy from one trophic level is transferred to the next.

• A. TRUE

• B. FALSE

• C. Sometimes True, sometimes False

• D. 15 %

In a food pyramid, the amount of energy generally increases as you move up to higher trophic levels.

• A. TRUE

• B. FALSE

• C. Sometimes True, sometimes False

• D. Lower levels