An experiment was set up to investigate the effect of light on the rate of photosynthesis in the…

An experiment was set up to investigate the effect of light on the rate of photosynthesis in the shoot of a water weed. The shoot was immersed in a 2% sodium hydrogen carbonate solution. The gas given off by the shoot was collected for five minutes at different light intensities and the volume measured. The results obtained are shown in the table below.

Light intensity(arb units)	1	2	3	5	10	20	30	40	50
Gas collected (cm3/5minutes)	0.35	0.6	0.85	1.20	1.55	1.70	1.80	1.79	1.79