Standard Science Primary 6 Energy

A plant is placed under a green light for 24 hours. Why does its growth slow down significantly?

A Plants only perform photosynthesis during the day.
B Green light is too hot for the plant.
C Chlorophyll reflects green light and does not absorb it well for photosynthesis.
D The plant is too busy producing green pigments.
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Worked Solution

Step 1: Photosynthesis requires light energy absorption. Step [2-9]: Chlorophyll is green because it reflects green light. Step [2-9]: Since it reflects green light, it cannot capture enough energy to sustain a high rate of photosynthesis.

Correct answer: Chlorophyll reflects green light and does not absorb it well for photosynthesis.

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