Food Chains and Ecosystems Quiz

Where does almost all energy in food chains originally come from?

• Water

• The Sun

• The soil

• Decomposers

What process do plants use to make their own food?

• Respiration

• Digestion

• Photosynthesis

• Decomposition

In photosynthesis, plants use sunlight to make:

• Water

• Carbon dioxide

• Glucose (sugar)

• Oxygen

What process do all living things use to release energy?

• Photosynthesis

• Cellular respiration

• Decomposition

• Condensation

What is a producer in a food chain?

• An animal that eats other animals

• A plant that makes its own food

• A decomposer that breaks down waste

• A predator at the top of the food chain

Which of the following is a correct food chain?

• Sun → Fox → Grass → Rabbit

• Grass → Sun → Rabbit → Hawk

• Sun → Algae → Fish → Shark

• Sun → Rabbit → Grass → Owl

Which level of a food chain uses photosynthesis?

• Producer

• Primary consumer

• Secondary consumer

• Decomposer

In a food web, which of the following could be both predator and prey?

• Sun

• Grass

• Rabbit

• Snake

What role do decomposers play in food webs?

• They make their own food using sunlight

• They break down dead plants and animals

• They hunt and eat prey

• They compete for sunlight

Why are producers important to all food chains and webs?

• They release oxygen into the air

• They provide energy for all other living things

• They eat other animals for energy

• They help animals hunt