Which plant hormone is produced by some fruit during ripening?a) auxin.b) cytokinin.c) ethylene.d) abscisic acid

Answer

The plant hormone produced by some fruit during ripening is c) ethylene.

Explanation

Ethylene is a gaseous plant hormone that plays a critical role in the process of fruit ripening. It is produced in small amounts by many fruits, particularly as they start to mature. The production of ethylene triggers various physiological processes that lead to the ripening of fruits, including changes in color, texture, and flavor. This hormone initiates the breakdown of starches into sugars, softening of the fruit tissue, and promotes the synthesis of other important compounds that enhance the fruit's taste and aroma.

In contrast, auxins are primarily involved in cell elongation and growth, cytokinins are associated with cell division and growth, and abscisic acid mainly regulates stress responses and seed dormancy. Therefore, ethylene stands out as the key hormone responsible for the ripening process in fruits.