Final answer:
The independent variable in the experiment is the different light schedules for the rose bushes, and the dependent variable is the number of flowers on each bush.
Step-by-step explanation:
The independent variable in the experiment is the different light schedules for the rose bushes. The experiment tests how the number of flowers on each bush is affected by the amount of light they receive. The dependent variable is the number of flowers on each bush at the end of the 3-month period.