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.
The toner cartridge contains powder (toner) used for creating letters and images. You need to replace the toner cartridge when the toner is running short or print quality becomes poor because of toner deterioration.