The Cylinders in This Experiment Represent a 24-Hour Period

True/False

The cylinders in this experiment represent a 24-hour period. The light area represents light periods during a 24-hr. period and the dark area represents dark periods during a 24-hr. period. The critical length of dark vs. light periods for flowering is depicted by the dotted line. Note that some plants are flowering and some are not flowering. Study the results of this experiment on photoperiodism and flowering to determine whether the following statements are true or false.
-In order for hormones like auxin to be used as a chemical signal within a plant it must travel through the xylem to reach the site of activity.