I'm curious to know if the process of photosynthesis has a "ramp-up" time to become useful to a plant, or if it begins instantaneously when the plant is exposed to light after a period of darkness.

For example, if I'm growing a plant indoors using artificial light, does the plant start converting CO2 the very moment I switch on the light, or does it take a certain period of time for the reaction to reach a critical momentum for the plant to be able to produce sugars?

Or, as a thought experiment, if I turned on the light for 10 minutes, would the plant produce roughly the same amount of sugars as if I toggled the light on for 1 minute, then off for 10 minutes, 10 times in a row?


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