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Question

Compensation point refers to the intensity of light at which

A
Rate of respiration = Rate of photosynthesis
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B
Rate of respiration > Rate of photosynthesis
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C
Rate of respiration < Rate of photosynthesis
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D
None of the above is correct
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Solution

The correct option is A Rate of respiration = Rate of photosynthesis
Rate of photosynthesis in plants is generally higher than respiration but there comes a point of certain light intensity at which uptake of CO2 for photosynthesis is equal to CO2 released from respiration. This point is known as compensation point at which rate of photosynthesis is equal to rate of respiration.
So, the correct answer is 'Rate of respiration = Rate of photosynthesis'.

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