(a(i))[1]
On Fig. 6.1, draw a line from the X to indicate the route that this water molecule takes as it enters the tissue that transports it to the leaves.
(a(ii))[1]
State the name of the process by which the water molecule enters the root.
(a(iii))[1]
State the name of the tissue that carries the water to the leaves.
(b(i))[1]
State the rate of mineral ion uptake at 25\ ^\circ\text{C} in Fig. 6.3.
(b(ii))[4]
Describe and explain the pattern shown in Fig. 6.3. Support your answer with data from the graph.
(c)[2]
State the name of one mineral ion that plants take in through their roots and state why the plants need this mineral ion.