auxin molecule, structural chemical formula, ball-and-stick model, image indole-3-acetic acid

auxin indole3acetic acid plant hormones plantgrowth regulators molecule molecular structure chemical formula isolated model c10h9no2 atom chemistry compound hormone carbon oxygen science hydrogen education growth biochemistry illustration phytohormone toxic acetic biosynthesis herbicide iaa study atomic chain stimulant nitrogen catabolism herbicidal horticulture root structural herb fruit organic ethylene indole ball- -stick image indole-3-acetic ball- -stick acid