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Leaf in Sunlight

A green leaf uses sunlight, carbon dioxide, and water to make sugar. It releases oxygen into the air.

In the picture

  1. Sunlit leaf surface: sunlight is captured
  2. Stem channel: water travels from the roots up to the leaf
  3. Tiny leaf pore: carbon dioxide enters the leaf
  4. Pale bubble at the leaf edge: oxygen leaves the leaf
  5. Green chloroplast in the leaf cell: sugar is made

Examples

  • A potted plant on a sunny windowsill
  • A tree in a park on a clear day

Quiz: Leaf in Sunlight (Age 13)

  1. During photosynthesis, what does a plant use light energy to make?

    • Oxygen
    • Carbon dioxide
    • Sugar
  2. Which gas enters a leaf through its tiny pores?

    • Carbon dioxide
    • Oxygen
    • Water vapor
  3. What does photosynthesis release into the air?

    • Carbon dioxide
    • Oxygen
    • Sugar

The answers, each with its explanation, are in the app. This lesson has left the free week, so its quiz is part of the subscription.

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Science, Age 13