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      Question

      Which of the following plant hormones is known to

      accelerate flower senescence in many cut flowers like roses?
      A Cytokinin Correct Answer Incorrect Answer
      B Auxin Correct Answer Incorrect Answer
      C Ethylene Correct Answer Incorrect Answer
      D Gibberellin Correct Answer Incorrect Answer

      Solution

      Ethylene is a senescence-promoting hormone; sensitive crops like roses and carnations suffer reduced vase life under high ethylene exposure.

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