Which of the following plant growth regulators is responsible for breaking seed and bud dormancy, initiating germination in peanut seeds, and sprouting of potato tubers?

Step-by-step solution

According to NCERT, Ethylene breaks seed and bud dormancy, initiates germination in peanut seeds, and promotes the sprouting of potato tubers. Abscisic acid (ABA) generally acts as a growth inhibitor and induces dormancy rather than breaking it. While Gibberellic acid is involved in breaking seed dormancy in certain cases, the specific examples of peanut seeds and potato tubers are directly attributed to ethylene. Cytokinins are primarily involved in cell division, overcoming apical dominance, and delaying senescen