Understanding Food Chains and Food Webs

Why do living organisms need energy?

• To sleep longer

• To grow taller

• To change color

• To perform activities

What do plants use to make their own food?

• Hydrogen, sunlight, and water

• Oxygen, sunlight, and soil

• Nitrogen, sunlight, and air

• Carbon dioxide, sunlight, and water

What is the main source of energy for plants?

• Water

• Air

• Sunlight

• Soil

What are animals that eat only plants called?

• Insectivores

• Herbivores

• Omnivores

• Carnivores

Which animals are known as carnivores?

• Animals that eat plants

• Animals that eat other animals

• Animals that eat insects

• Animals that eat both plants and animals

What is the role of producers in a food chain?

• They decompose dead organisms

• They produce food

• They consume other animals

• They provide shelter

Who are the primary consumers in a food chain?

• Animals that eat other animals

• Animals that eat plants

• Plants that make food

• Bacteria that decompose

Which organisms are considered secondary consumers?

• Herbivores

• Decomposers

• Plants

• Carnivores that eat herbivores

What is the starting point of most food chains?

• Animals

• Decomposers

• Plants

• Sunlight

What do decomposers do in a food chain?

• They produce food

• They eat plants

• They decompose dead organisms

• They hunt other animals