At low light intensities (A) – when light
is a limiting factor – temperature has no effect upon photosynthesis.
Therefore Q10 = 1
At high light intensities (B) – when light
is not limiting – temperature has an effect upon photosynthesis. The rate doubles for every 10°C rise in
temperature
Therefore Q10 = 2
Conclusion
Photosynthesis consists of
two reactions
I The Light Dependent Reaction
Photochemical and unaffected by the temperature
(Q10 = 1)
II The Light Independent Reaction (aka "Dark" Reaction)
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