Write answers below right. True or False Questions. Read the whole statement or series of statements. IAA produced in the apical meristem promotes apical dominance in most plants. The definition of a hormone includes the stipulation that the chemical must be transported from its site of synthesis to a site of action.
ABA promotes dormancy in winter buds and seeds.
As auxin moves from apical meristem towards the root, it enters the top side of cells as a neutral ion and is converted to an anion upon entering the cell. Fruit growth is promoted in some species when both auxin and gibberellin are sprayed on them. Auxin stimulates proton pumps located in the plasma membrane of plant cells. Thus following auxin treatment, the pH of the apoplast is significantly lower. Fritz Went was the first to extract auxin and name it.