BI-2046
Factors affecting photosynthesis
Biology · Secondary 4 · Hard · Factors affecting photosynthesis
A student shines light of different intensities on a water plant and counts the number of bubbles produced per minute as a measure of photosynthesis rate. At low light intensity, the rate is low but increases as light intensity increases. Why does this happen?
- Higher light intensity increases chlorophyll mass in the leaves instantly.
- Higher light intensity provides more energy, so more photosynthesis reactions occur each second.
- Higher light intensity increases the amount of carbon dioxide in the air.
- Higher light intensity lowers the leaf temperature to the optimum.
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