The effect of gibberellic acid on wild-type and rosette plants Brassica rapaIntroThis experiment was performed to test two hypotheses regarding the hormone plant gibberellic acid and a rosette-shaped mutant phenotype of the plant Brassica rapa. This experiment was conducted to test the effects of gibberellic acid on plants and its effect on rosette-shaped complexes. The two hypotheses in this experiment are as follows: Hypothesis number one states that gibberellic acid allows for stem elongation in plants. Hypothesis number two. The rosette complex in the rosette phenotype plant naturally contains less gibberellic acid and is therefore shortened. Plant hormones are some chemicals found in plants that control plant growth and development by influencing the division, differentiation and elongation of cells. (Campbell, 2008) Each hormone has multiple effects depending on the site of action, its concentrations and the stage of development of the plant. (Campbell, 2008) Auxin is a plant hormone that is synthesized within the apical meristems and young leaves of a growing plant. Auxin stimulates stem elongation when present in low concentrations. It promotes the formation of lateral and adventitious roots, regulates fruit development, improves apical dominance, functions in gravitropism and phototropism, promotes vascular differentiation, and delays leaf abscission. Gibberellic acid is one of several plant hormones that govern the growth of a plant. Gibberellins allow stem elongation in plants. Plants without enough of this hormone tend to grow short or stunted. This chemical is rich in potassium, which is one of the main components of plant fertilizer and is very important in itself for plant growth. The... central part of the card... the more or less weak looking of the two was removed and destroyed. Once there was only one plant left in each cup, the plants were measured, watered, and placed back on the shelf to receive more light. Two team members were asked to visit the laboratory each day of the experiment to water and measure the plants (Handout 1). The measurements taken had to be precise and accurate by the group organizing a standardized way to measure the plants. Plants were measured from the ground level, which was flat in all cups, to the tips of the apical meristems. The leaves were not considered. The plants were watered almost every day, except when the laboratory was closed. Regardless of the cup label, the appropriate drop of solution has been added to the plant, at the tip of the apical meristems.Day 8