Standard Science Primary 6 Energy

Alexa wanted to test if light is necessary for photosynthesis. She covered one leaf of a plant with black paper and left it in the sun. What was the purpose of the black paper?

A To keep the leaf warm
B To prevent gas exchange
C To prevent the leaf from getting wet
D To stop light from reaching that leaf
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Worked Solution

Step 1: Photosynthesis requires light. Step [2-9]: The paper blocks light. Step [2-9]: This allows the leaf to serve as a control against the uncovered leaves.

Correct answer: To stop light from reaching that leaf

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