Question 7
What is auxin ? In which part of the plant auxin is manufactured? How does auxin work.
Answer
Auxin is a class of plant hormones that play a crucial role in regulating various growth and development processes in plants.
The most common auxin is Indole-3-acetic acid (IAA), which is synthesized primarily in the shoot apical meristem, the growing tip of the plant.
Auxin works by binding to specific receptors on the surface of plant cells, which triggers a signal transduction pathway that ultimately leads to changes in gene expression and cellular responses. Auxin promotes cell elongation, regulates apical dominance, stimulates root initiation, and plays a role in tropisms, which are directional growth responses in plants in response to environmental stimuli. Auxin also helps in the formation of adventitious roots in cuttings and plays a role in fruit development.
