A CO2 gradient between the inside and outside of a leaf is maintained during photosynthesis because Group of answer choices energy is expended by the plant to maintain the CO2 gradient. the CO2 concentration outside of the leaf is always increasing. the CO2 concentration in the mesophyll is constantly decreasing. the stomata close whenever more CO2 is needed.
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For C3 plants during the day, a CO2 gradient is maintained between the inside and outside of a leaf because: a. Energy is expended by the plant to maintain the CO2 gradient. b. The stomata close whenever more CO2 is needed. c. The CO2 concentration outside the leaf is always increasing. d. The CO2 concentration in mesophyll cells is constantly decreasing.
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