Standard Science Primary 6 Energy

Ravi placed a green plant in a dark room for 48 hours before starting an experiment on photosynthesis. Why did he do this?

A To ensure the plant uses up its stored starch
B To make the leaves turn yellow
C To prevent the plant from taking in water
D To allow the plant to grow bigger
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Worked Solution

Step 1: To test for new photosynthesis, we must start with no starch in the leaves. Step [2-9]: In the dark, the plant cannot make food and will use its stored starch for energy.

Correct answer: To ensure the plant uses up its stored starch

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