Researchers studying plant growth designed an experiment to test the effect of caffeine onthe growth of onion roots. They hypothesized that caffeine-a stimulant-would increasethe rate of root growth.They immersed the bottom of a group of onion bulbs in a solution of 1 mM caffeine andthat of the other group of onion bulbs in distilled water. Then they measured the rootlength of both treated or experimental and untreated or control groups of onion bulbs.This was repeated for a total of five trials. The results from their experiments are illus-trated in the table below.TrialUsing the data set above,Root Length (in mm)Control Group181925171234519Data table showing onion root length of control and experimental groupsExperimental Group1815121314(a) Construct a graph based on the type of data collected during the experiment(b) What is the mean for the control and experimental conditions in this experiment?(c) Identify if there is a significant difference between the control and experimental conditionsin the experiment

This is the graph constructed based on the type of data collected during experiment.CONTROL : In this experiment, controls are those sample or bulbs which are immersed in distilled water. Because, in distilled water roots of bulbs are grows normally. EXPERIMENTAL CONDITION : In the other hand, the bulbs which are immersed in 1mM caffeine solution are called experimental samples or experimental condition. Because of caffeine, roots of this group of samples are grows faster or slower. This growth rate measurement is the main aim of this experiment. All and every time, the normal condition is called control and in which any changes to be created intentionally that is called experimental sample.In this experiment, from the given data, we can see that in the addition of caffeine, the root growth is minimizes that means slow down. In the natural condition, i.e.- control, roots are grows more quickly than the experimental one. Hence, we can conclude from this experiment, caffeine is not increase the rate of root growth but also reduce the root growth rate.