AP BIOLOGY

Detailed explanation-1: -Ethylene is responsible for the changes in texture, softening, color, and other processes involved in ripening. Ethylene level in under-ripe fruit is very low, but as fruit develop, the fruit produce larger amounts which speed up the ripening process or the stage of ripening. Q.

Detailed explanation-2: -Abscisic acid (ABA) and ethylene are the major regulators of ripening and senescence in both dry and fleshy fruits, as demonstrated by numerous ripening-defective mutants, effects of exogenous hormone application, and transcriptome analyses.

Detailed explanation-3: -Ethylene is a gaseous plant hormone that plays an important role in inducing the ripening process for many fruits, together with other hormones and signals. An unripe fruit generally has low levels of ethylene. As the fruit matures, ethylene is produced as a signal to induce fruit ripening.

Detailed explanation-4: -Ethylene governs the development of leaves, flowers, and fruits.