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      Question

      Lilium bulbs require a period of "Vernalization," which

      means:
      A Heat treatment Correct Answer Incorrect Answer
      B Cold treatment Correct Answer Incorrect Answer
      C Chemical dipping Correct Answer Incorrect Answer
      D Drying in the sun Correct Answer Incorrect Answer

      Solution

      Most lilies need a cold period (2–5Β°C) to break dormancy and initiate flower bud development. Without this chilling, the plants may only produce foliage and no flowers.

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