Mon Prof Augmenté
How a Leaf Makes Its Food
A green leaf catches sunlight and uses it to turn water and air into sugar, which is its food. This is called photosynthesis, and it also releases the oxygen we breathe.
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In the picture
- Sunlight shines on the leaf and gives it energy.
- Water travels from the roots up the stem into the leaf.
- Air enters the leaf through tiny holes underneath, bringing carbon dioxide.
- Inside the green leaf, all of these are turned into sugar, the plant’s food.
Examples
- A houseplant on a sunny windowsill grows toward the light.
- Grass turns yellow when a board covers it for a few days.
Key takeaways
- Plants make their own food using sunlight, water and carbon dioxide.
- Photosynthesis releases oxygen into the air.
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