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      Question

      PAR stands

      for:
      A Partial Air Rate Correct Answer Incorrect Answer
      B Photosynthetically Active Radiation Correct Answer Incorrect Answer
      C Plant Accumulation Ratio Correct Answer Incorrect Answer
      D Periodic Air Rotation Correct Answer Incorrect Answer

      Solution

      PAR refers to the light spectrum (400–700 nm) that plants use for photosynthesis. Measuring PAR is more important than measuring total light intensity for plant health.

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