(a)[2]
State the word equation that represents photosynthesis.
(b(i))[2]
Suggest and explain why the scientists kept the leaves at 20b0C while they were recording the results.
(b(ii))[3]
Calculate the percentage increase in the rate of photosynthesis at a light intensity of 1250 arbitrary units when the carbon dioxide concentration was increased from 140 ppm to 1000 ppm. Show your working and give your answer to the nearest whole number.
(b(iii))[3]
Describe the effect on the rate of photosynthesis of increasing light intensity when the carbon dioxide concentration was 140 ppm.
(b(iv))[4]
Explain the effect on the rate of photosynthesis of increasing light intensity when the carbon dioxide concentration was 1000 ppm. Use the term limiting factor in your answer.