Multiple choice

Which plant growth regulator is produced synthetically from the compound ethephon?

  1. Ethylene

  2. Auxin

  3. Cytokinin

  4. Flurenol

  5. Morphactin
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A Correct answer
Explanation

It is a gaseous plant hormone playing a key regulatory role in ripening of many types of fruits, including banana, apple, pear and melons. It can be produced naturally by ripening fruits or from synthetic sources such as ethephon. 

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