Grade 4 · Science · Unit 2 of 9
Food Chains & Webs
Producers, consumers and decomposers
What your child practises
Producers, consumers and decomposers, herbivores, carnivores and omnivores, how energy moves along a food chain, and why a food web is a more complete picture.
Ontario Curriculum expectation: B2.3, B2.4, B2.5 · producers, consumers and decomposers, food chains and webs, and animal diets
Sample questions
A taste of this unit. In the app, questions change every time and get easier or harder to match your child.
Question 1
A black bear eats berries, fish and insects. A bear is an…
🐻- carnivore
- herbivore
- producer
- omnivore
Show answer
omnivore
Hint: Omnivores eat both plants and animals.
Question 2
A producer, like grass, is eaten by a grasshopper. The grasshopper is a…
🦗- producer
- tree
- consumer
- decomposer
Show answer
consumer
Hint: Consumers eat other living things.
Question 3
A hawk eats a chickadee that ate a caterpillar. What is the hawk called?
🦅- a producer
- a top consumer in that chain
- a seed
- a decomposer
Show answer
a top consumer in that chain
Hint: It is at the end of the chain.
Question 4
What does it eat? Tap an item, then tap its basket.
Sort into: 🌿 herbivore · 🍖 carnivore · 🍽️ omnivore
- 🫎moose
- 🐈lynx
- 🦉great horned owl
- 🐦⬛crow
- 🦝raccoon
- 🦫beaver
Show answer
🌿 herbivore: moose, beaver · 🍖 carnivore: lynx, great horned owl · 🍽️ omnivore: crow, raccoon
Hint: Herbivores eat plants. Carnivores eat animals. Omnivores eat both.
Question 5
Put the food chain in order. Start with the producer.
- 🐦chickadee
- 🐛caterpillar
- 🦅hawk
- 🍁maple leaves
Show answer
maple leaves → caterpillar → chickadee → hawk
Hint: Start with the plant, then the animal that eats it, then the animals that eat that animal.
Question 6
What do decomposers do for the soil?
🪱- make rain
- make rocks
- return nutrients from dead things to it
- take away all nutrients
Show answer
return nutrients from dead things to it
Hint: Nutrients get used again by plants.