Auxins are plant hormones. The most important auxin produced by plants is indole-3-acetic acid (IAA). 1  development of the embryo. 2  leaf formation. 3  phototropism. 4  gravitropism. 5  apical dominance. 6  fruit development. 7  abscission.8  root initiation and development.he most important auxin produced by plants is indole-3-acetic acid (IAA). 1  development of the embryo. 2  leaf formation. 3  phototropism. 4  gravitropism. 5  apical dominance. 6  fruit development. 7  abscission. 8  root initiation and development.
Best Answer: A toner cleans up your face thoroughly, by removing any dirt, dead skin-cells, or other mess you might have on your face. Using it as a cleanser is much more gentle on the skin than using face-soap. It also tightens & helps firm your skin, giving it a healthy look.
Listed below are the things that toners specifically designed to do. 1  They remove residue from the facial wash or foam that you used for the first step of your routine. Likewise, toners remove other remaining dirt on the skinâs surface. 2  Toners hydrate the skin (unlike astringents that leave the skin feeling parched).