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Which of the following is a compensation point:
  • (A)  Leaves respire and utilize O2 and release CO2.
  • (B)  Photosynthesis and respiration occur at same rate. So there is not net exchange of gases between atmosphere and plants.
  • (C)  Rate of photosynthesis increases, so do the O2 production, with a net release of oxygen coupled with the uptake of CO2.
  • (D)  Rate of respiration becomes more than rate of photosynthesis.