BI-2001
Factors affecting photosynthesis
Biology · Secondary 4 · Hard · Factors affecting photosynthesis
An investigation measured the rate of photosynthesis of a plant at different light intensities while keeping carbon dioxide concentration and temperature constant. The rate increased at first but then became constant even when light intensity was raised further. What is the best explanation?
- Chlorophyll is destroyed at high light intensity.
- All enzymes stop working at high light intensity.
- Another factor becomes limiting so extra light has no further effect.
- The plant stops absorbing carbon dioxide at high light intensity.
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