Standard Science Primary 4 Systems

Ali covered the leaves of a plant with black paper. After a week, the plant started to turn yellow. Which function was prevented by the black paper?

A Transport of minerals by the stem
B Absorption of water by the roots
C Making of food by the leaves
D Gaseous exchange through the stomata
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Worked Solution

Step 1: Leaves need light to perform photosynthesis. Step [2-9]: Black paper blocks sunlight. Step [2-9]: Without light, the plant cannot make food and loses its green colour.

Correct answer: Making of food by the leaves

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