5.Plants of the same species and the same initial height were exposed to a constant number of hours of light each day. The number of hours per day was different for each plant, but all other environmental factors were the same. At the conclusion of the investigation, the final height of each plant was measured. The following data were recorded: 2 hours, 5 cm; 4 hours, 12 cm; 6 hours, 18 cm; 8 hours, 25 cm; 10 hours, 34 cm; 12 hours, 35 cm; 14 hours, 35 cm.