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The plant hormone which counteracts apical dominance is
Solution:
Apical dominance is the phenomenon where the growth of the apical bud inhibits the growth of lateral buds. This is primarily caused by auxin produced in the apical bud. Cytokinins are plant hormones that promote cell division and are found in high concentrations in areas of rapid cell division, such as root apices and developing shoots. Cytokinins promote the growth of lateral buds and thus counteract the effect of apical dominance caused by auxin. A high ratio of cytokinin to auxin promotes lateral bud growth.