Which plant hormone is primarily responsible for cell division, overcoming apical dominance, and delaying leaf senescence?

💡 Solution & Explanation

Cytokinins are a class of plant growth substances that stimulate cell division in plant roots and shoots, promote lateral bud growth to overcome apical dominance, and delay the aging of harvested leaves. Plant hormones like auxins primarily regulate cell elongation and phototropism, whereas gibberellins promote stem elongation and seed germination. These phytohormones play a vital role in plant tissue culture and agricultural productivity.