Which outcome occurs when daytime arid temperatures limit C4 plants?

💡 Explanation

Photorespiration increases because the high temperatures close stomata, limiting CO2 intake but allowing O2 build-up. The mechanism involves competitive inhibition of RuBisCO. Therefore, photorespiration competes with carbon fixation rather than efficient pathway operations under these conditions; other listed consequences do not describe RuBisCO-related stress.

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