Lesson Worksheet: Food Chains Science

In this worksheet, we will practice defining and identifying the main parts of a food chain that are linked together to form a habitat’s food web.


Look carefully at the food web shown. Plants are called producers as they produce the food which starts all food chains.

Where do all living things get their energy from?

  • AThe Sun
  • BPlants
  • CInsects
  • DBirds


What is the source of all energy in a food chain?

  • AThe producer
  • BThe consumer
  • CThe predator
  • DThe sun


Name the producer in this food web.

  • AThe mouse
  • BThe snake
  • CThe eagle
  • DThe plant


Fungi do not produce their own food. They consume dead plants and animals.

How would they be classified in an ecosystem?

  • AConsumers
  • BDecomposers
  • CProducers


Worms are decomposers. What role do decomposers play in ecosystems?

  • ADecomposers produce food using energy from the Sun.
  • BDecomposers consume living animals.
  • CDecomposers help put nutrients back into the soil.


Fill in the blank: Animals that eat other animals are called secondary consumers or .

Cheetah hunting springbuck
  • Aherbivores
  • Bdecomposers
  • Ccarnivores


Organisms in an ecosystem depend on each other for survival. Diagrams called food webs (or chains) are used to show these dependent relationships.

How do food chains begin?

  • AWith an animal
  • BWith a plant


Name the two producers in the food web shown.

  • AZooplankton and phytoplankton
  • BFish and crab
  • CPhytoplankton and seaweed
  • DBlue whale and leopard seal


Which organisms produce their own food using energy from the Sun? Use the diagram to help.

  • AEagles
  • BSnakes
  • CMice
  • DPlants


Plants use energy from the sun to produce food. Where does the mouse get its energy from?

  • AThe snake
  • BThe Sun
  • CThe eagle
  • DThe plant

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