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Fruit ripening hormone is
1. Ethylene 
2. Auxin 
3. Kinetin 
4. All of these

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Correct Answer - Option 1 : Ethylene 

The Correct Answer is Ethylene.

  • Ethylene, also known as the "fruit-ripening hormone," is a gas. Throughout its lifecycle, every fruit produces a certain amount of ethylene.
  • When fruit begins to ripen, however, ethylene levels rise dramatically.
  • Fruits can be divided into two classes based on how they react to ethylene during maturation.
  • The climacteric fruits are the first category, with ripening followed by an ethylene explosion.
  • The non-climacteric fruits are those whose ethylene production does not increase as the fruit ripens.


  • Auxins encourage stem elongation while inhibiting lateral bud development (maintains apical dominance). The stem, buds, and root tips all contain them.
  • Kinetin is a type of cytokine. Cytokinins are substances that help plants grow. Kinetin is a substance that is used in the production of pharmaceuticals.

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