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      Question

      Which growth regulator is commonly used to induce

      rooting in Chrysanthemum cuttings?
      A 100 ppm GA₃ Correct Answer Incorrect Answer
      B 1000 ppm IBA Correct Answer Incorrect Answer
      C 500 ppm Cytokinin Correct Answer Incorrect Answer
      D 2000 ppm ABA Correct Answer Incorrect Answer

      Solution

      IBA is an auxin that promotes root initiation. It stimulates cell differentiation at the cut base. This improves rooting speed and uniformity.

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