(a(i))[5]
Suggest and explain why the rate of photosynthesis of the plant decreases to zero just above $40\,^{\circ}\text{C}$.
(a(ii))[3]
Draw, on Fig. 8.1, the curve that would probably result if the same experiment were repeated using a plant such as sorghum. Give reasons for your curve.
(b(i))[1]
Complete Table 8.1 by adding the missing entries.
(b(ii))[3]
Use the data in the table to plot a graph on the grid below showing how light intensity affects the rate of photosynthesis.
(b(iii))[2]
With reference to photosynthesis, state what is meant by a limiting factor.
(b(iv))[1]
State the limiting factor for these four experiments.