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With reference to factors affecting the rate of photosynthesis, which of the following statements is not correct?
Explanation
$C_4$ plants, not $C_3$, have the higher temperature optimum.
Detailed Solution
In $C_3$ plants, photosynthesis decreases at higher temperatures due to increased photorespiration.
$C_4$ plants have a higher temperature optimum, partly because pyruvate phosphate dikinase is sensitive to low temperature.