Question
What is Auxin? Mention the site of secretion and the place of action of auxin.
Answer
Auxin is a class of plant hormones that play a critical role in regulating growth and development processes in plants. The primary site of auxin secretion is the shoot apical meristem, the growing tip of the plant, where it is synthesized from the amino acid tryptophan. Auxin acts in various parts of the plant, including stems, roots, and lateral buds, influencing processes such as cell elongation, apical dominance, root initiation, and directional growth in response to environmental stimuli.
