Multiple Choice
A CO₂ gradient between the inside and outside of a leaf is maintained during photosynthesis because
A) energy is expended by the plant to maintain the CO₂ gradient.
B) the CO₂ concentration outside of the leaf is always increasing.
C) the CO₂ concentration in the mesophyll is constantly decreasing.
D) the stomata close whenever more CO₂ is needed.
Correct Answer:
Verified
Correct Answer:
Verified
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