Which plant hormone is responsible for breaking seed dormancy and stimulating rapid stem elongation in plants?

💡 Solution & Explanation

Gibberellins are vital plant hormones that stimulate cell elongation, promote internodal growth, and break seed dormancy by triggering hydrolytic enzymes. Alternative compounds like abscisic acid typically inhibit growth and maintain dormancy, whereas ethylene primarily regulates fruit ripening and senescence. Cytokinins are principally involved in cell division and lateral bud growth rather than stem elongation. Gibberellins were first isolated in Japan from the fungus Gibberella fujikuroi.