(a(i))[1]
Draw two arrows on Fig. 6.1 to indicate how the root and shoot are growing.
(a(ii))[1]
Name the growth response shown by the root in Fig. 6.1.
(b)[3]
Explain why the seeds in test-tubes B, C and D failed to germinate.
(c(i))[2]
Complete Table 6.1 to show the role of nitrate and magnesium ions in a plant.
(c(ii))[1]
State the place where the mineral ions enter a plant.