DENDROLOGY

TREE PHYSIOLOGY

PHOTOSYNTHESIS

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
What will happen to the photosynthesis rate if you increase the intensity of light?
A
Photosynthesis rate will increase.
B
Photosynthesis rate will decrease.
C
Photosynthesis rate will remain the same.
D
Photosynthesis will stop.
Explanation: 

Detailed explanation-1: -As you rise from low light intensity to higher light intensity, the rate of photosynthesis will increase because there is more light available to drive the reactions of photosynthesis.

Detailed explanation-2: -As light intensity increases, the rate of photosynthesis increases keeping other factors adequately supplied. The rate of photosynthesis is proportionate to the intensity of light.

Detailed explanation-3: -Increasing photosynthesis increases carbon availability for plants.

Detailed explanation-4: -We know that when light intensity is low, the synthesis of chlorophyll decreases. We also know that when the amount of chlorophyll decreases, the rate of photosynthesis decreases as well. Therefore, the rate of photosynthesis decreases when light intensity is low.

Detailed explanation-5: -All biological and biochemical processes that they occur best in a certain optimum range of temperature. It is observed that, when CO2 and light are not limiting factors, the rate of photosynthesis increases with increase in temperatures till the optimum level for that plant.

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