Exploring Food Chains and Energy Flow

Where does all the energy in Earth's food chains originate?

• From soil

• From the sun

• From water

• From plants

What happens to the energy captured by plants from the sun?

• It is all used for the plant's growth

• It is transferred to consumers when they eat the plants

• It returns to the sun

• It is stored in the soil

What do we call organisms that produce their own food using sunlight?

• Producers

• Consumers

• Decomposers

• Herbivores

Which term describes an animal that eats only plants?

• Omnivore

• Producer

• Herbivore

• Carnivore

Which of the following is a primary consumer?

• Snake

• Owl

• Grasshopper

• Fox

What percentage of energy is typically passed on to the next level in a food chain?

• About 75%

• About 50%

• About 25%

• About 10%

Who is at the top of the food chain and is not hunted by other animals?

• Primary consumer

• Secondary consumer

• Tertiary consumer

• Apex predator

What role do decomposers play in the food chain?

• They eat live plants

• They are apex predators

• They break down dead organisms

• They produce their own food

Which organisms are responsible for breaking down dead plants and animals?

• Carnivores

• Herbivores

• Decomposers

• Producers

What is a food web?

• A collection of primary consumers

• A group of apex predators

• A network of interconnected food chains

• A single chain of energy transfer