Standard Science Primary 6 Energy

In an experiment, a leaf was covered with black paper as shown. After 24 hours in the sun, which part of the leaf will likely test positive for starch?

A Only the uncovered part
B Only the covered part
C The entire leaf
D Neither part
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Worked Solution

Step 1: Photosynthesis requires light energy. Step [2-9]: The black paper prevents light from reaching the covered part. Step [2-9]: Starch is a product of photosynthesis; therefore, it will only be present in the uncovered part that received light.

Correct answer: Only the uncovered part

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