Biology - Compensation Point
Think carefully about what happens to the concentration gradients of CO2
and O2 during the day and night, and therefore which way diffusion and net
(overall) movement will take place. When the amount of CO2 given out by
cells in respiration = amount of CO2 required in photosynthesis, the
compensation point has been reached. (Similarly, input and output of O2.)
The air spaces within the spongy mesophyll of the leaf enable diffusion of
gases within the leaf.
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