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      Question

      Artificial lighting used to extend day length is

      called:
      A Shading light Correct Answer Incorrect Answer
      B Photoperiodic lighting Correct Answer Incorrect Answer
      C HID lighting Correct Answer Incorrect Answer
      D Thermal lighting Correct Answer Incorrect Answer

      Solution

      Low-intensity lighting is used to manipulate the "perceived" day length to control flowering schedules. It prevents short-day plants from flowering prematurely during long-day seasons.

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