Grade 7 · Science · Unit 6 of 9
Photosynthesis
How plants turn sunlight into food
What your child practises
Children learn that plants use light energy, water and carbon dioxide to make glucose and oxygen, and why that matters for every food chain.
Manitoba Curriculum learning outcome: SCI.7.E.18 · photosynthesis, energy, chlorophyll and glucose
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
Which gas do plants take in for photosynthesis?
- helium
- carbon dioxide
- oxygen
- nitrogen
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carbon dioxide
Hint: Carbon dioxide enters leaves through tiny openings.
Question 2
Which part of a plant takes in water?
- roots
- seeds
- flowers
- petals
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roots
Hint: Water travels from the roots up to the leaves.
Question 3
Extra glucose that a plant does not use is stored as…
- oxygen
- starch
- salt
- chlorophyll
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starch
Hint: Potatoes store starch in their underground stems.
Question 4
Grasses on the Manitoba prairie use sunlight to make glucose. They are…
- producers
- consumers
- predators
- decomposers
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producers
Hint: They make their own food, so they are producers.
Question 5
Photosynthesis is the process plants use to…
- break food down into soil
- drink water through leaves
- make food from light, water and carbon dioxide
- make light from heat
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make food from light, water and carbon dioxide
Hint: Plants build their own food using the Sun’s energy.
Question 6
Plants in a sealed jar in the light last a long time. Why?
- They eat the glass
- They use the carbon dioxide animals make and give back oxygen
- They make water from nothing
- They need no gas at all
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They use the carbon dioxide animals make and give back oxygen
Hint: Matter cycles between photosynthesis and respiration.