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    How does light intensity influence transpiration rate - and how does this ultimately affect surface area?
    If possible could anyone suggest some useful sources that may contain evident information?

    Light intensity increases the transpiration rate until it is no longer the limiting factor, as light energy is used in photosynthesis, which both produces and uses gases.
    However, I don't know how light intensity directly affects SA. Indirectly, it could increase the SA of the leaf because there is a higher rate of growth of the leaf due to the increased rate of photosynthesis.
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