This page discusses auxins, particularly indole-3-acetic acid (IAA), which are vital plant hormones impacting growth, development, and responses to environmental stimuli. Auxins regulate processes lik...This page discusses auxins, particularly indole-3-acetic acid (IAA), which are vital plant hormones impacting growth, development, and responses to environmental stimuli. Auxins regulate processes like phototropism, gravitropism, and fruit development, enhancing horticultural practices. Additionally, it covers synthetic auxins like 2,4-D and 2,4,5-T, used as selective herbicides that affect broad-leaved plants while sparing grasses, though their mechanisms are not fully understood.