(a)[2]
Describe and explain the trend in the results between a light intensity of 20 and 30 arbitrary units.
(b(i))[2]
The investigation was repeated with a higher concentration of carbon dioxide in the atmosphere. Draw a curve on Fig. 6.1 to show the pattern of results expected for this second investigation.
(b(ii))[1]
State the name of the photosynthetic product that contains carbon atoms.
(b(iii))[5]
Outline the ways in which a plant uses named carbohydrates.