(a(i))[5]
Describe the rate of uptake of nitrate ions along the root. In your answer, use the information in Fig. 2.1 and Fig. 2.2.
(a(ii))[4]
Explain how nitrate ions move from the soil into roots.
(a(iii))[1]
Explain why the uptake of ions, such as nitrate, matters for water uptake in roots.
(a(iv))[3]
Explain why plants require nitrate ions, apart from for water uptake.
(a(v))[3]
Describe how nitrate ions are formed in the soil.
(b(i))[2]
Put the events shown in Fig. 2.3 in the correct sequence.
(b(ii))[1]
State the name of the process outlined in Fig. 2.3.