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Increasing the light intensity will boost the speed of photosynthesis. Carbon dioxide concentration. Sometimes photosynthesis is limited by the concentration of carbon dioxide in the air. Even if there is plenty of light, a plant cannot photosynthesise if there is insufficient carbon dioxide.
Published: 23rd March, 2015 Last Edited: 23rd March, 2015. This essay has been submitted by a student. This is not an example of the work written by our professional essay writers. The purpose of this experiment is to observe the factors affecting the Photosynthetic rate of leaves, which is measured in two ways. Firstly changing the light intensity, this will determine the rate of increase or decrease in photosynthesis.