Ripening of fruits requires what natural plant:

The natural plant components that directly control and regulate the ripening of fruits are Hormones.

The Science of Fruit Ripening

• Hormones (The Primary Driver): The specific plant hormone responsible for fruit ripening is a gas called ethylene. It acts as a chemical signal that triggers changes in color, texture, and flavor.
• Enzymes: While enzymes physically carry out the tasks (such as breaking down starches into sugars or softening cell walls), they are merely tools synthesized and activated by the master hormonal signal.
• Sunlight and Water: These are external environmental factors crucial for the plant's overall growth, photosynthesis, and fruit development, but they do not directly trigger the internal biological ripening process itself.