PLANT PHYSIOLOGY
PLANT GROWTH
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Increases the rate at which enzymes work by increasing the kinetic energy
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Gives the plant energy to grow
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Allows enzymes to live or be killed
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It does not
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Detailed explanation-1: -Temperature has an impact on the rate of photosynthesis. The rate of photosynthesis increases as the temperature rises. During photosynthesis, a temperature of more than 40 °C slows down the process. Because it is an enzyme-controlled process, this is the case.
Detailed explanation-2: -As temperature increases the number of collisions increases, therefore the rate of photosynthesis increases. However, at high temperatures, enzymes are denatured and this will decrease the rate of photosynthesis.
Detailed explanation-3: -At low temperatures, the rate of photosynthesis is limited by the number of collisions between enzymes and substrate. As temperature increases the number of collisions increases, therefore the rate of photosynthesis increases.
Detailed explanation-4: -If the temperature increases, the rate of photosynthesis increases. If the temperature is too high, enzymes will denature, causing photosynthesis to slow drastically.
Detailed explanation-5: -Moreover, as temperature rises, the affinity of Rubisco for CO2 decreases, which tends to catalyze its oxygenase reaction. It would result in the increase of photorespiration and reduce the efficiency of photosynthesis, ultimately leading to reduced crop yields.