. The rate of photosynthesis decreases at higher temperatures. Why?
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The process of photosynthesis is an enzyme specific process. All the enzymes act at an optimum temperature. If the temperature increases beyond 35 °C, enzymes denature, which affects the rate of photosynthesis.
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Explanation:
High Temperatures
At temperatures above 68 degrees Fahrenheit, or 20 degrees Celsius, the rate of photosynthesis decreases because the enzymes do not work as efficiently at this temperature. This is despite the increase of carbon dioxide diffusion into leaves.
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