The Plant Hormone That Promotes Fruit Ripening is ____

Question

The plant hormone that promotes fruit ripening is ____.  
A) auxin
B) gibberellin
C) cytokinin
D) abscisic acid
E) ethylene

Accepted Answer

The plant hormone that promotes fruit ripening is ethylene. It is produced by the fruit itself and acts as a signal to ripen other fruit on the same plant. Ethylene triggers various biochemical processes that result in softening, color change, and flavor development, which are typical changes in ripening fruit.