Standard Science Primary 6 Energy

A plant was kept in a dark room for 48 hours. Which of the following will be absent in its leaves after this period?

A Chlorophyll
B Starch
C Water
D Air
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Worked Solution

Step 1: Photosynthesis requires light energy to produce sugar. Step 2: Excess sugar is stored as starch. Step 3: In the dark, the plant uses up its stored starch for energy and cannot produce more.

Correct answer: Starch

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