Light Intensity as a Limiting Factor
Light provides the energy needed for photosynthesis. As light intensity increases, so does the rate of reaction—up to a point.
What happens to the rate of photosynthesis when light intensity is very high?
What is Light Intensity as a Limiting Factor?
"Light intensity is the amount of light energy hitting a surface, which directly influences the rate of photosynthesis."
Which statement accurately describes limiting factors light at a GCSE level?
Which change would usually increase the rate of photosynthesis if light intensity is the limiting factor?
Choose the correct answer: which change would usually increase the rate of photosynthesis if light intensity is the limiting factor?
Select which change would usually increase the rate of photosynthesis if light intensity is the limiting factor?
Light vs Rate
Increasing light intensity increases photosynthesis rate linearly at first.
Eventually, the rate levels off because another factor (like CO2) becomes limiting.
Light intensity is an independent variable in most photosynthesis experiments.
If a graph starts at the origin and goes up, light is the limiting factor.
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