Students investigated the effect of temperature on the rate of photosynthesis. The students shone light from a lamp onto pondweed and measured the volume of oxygen produced per hour.
Table 1 shows the results.
Temperature in °C
Table 1
Rate of photosynthesis in cm3/hour
Test 1
Test 2
19.3 34.1 45.2 39.8 20.5 14.2
Test 3 Mean 19.5 X 32.9 33.2 44.9 44.0 44.0 40.8 22.4 22.0
2.2 2.1
20 18.5 25 32.6 30 41.9 35 38.6 40 23.1 45 1.9
*02*
IB/M/Jun20/8461/1H

*03*
IB/M/Jun20/8461/1H
3
Do not write outside the box
01.3
Calculate mean value X.