(a)[4]
Name the parts A, B, C and D shown in Fig. 2.1.
(b)[3]
Describe the route taken by water as it travels from the potometer, through the plant stem and out into the surrounding air.
(c(i))[1]
In one experiment, the bubble travelled $60\,\text{mm}$ in $10$ minutes. Calculate the average rate at which the bubble moved in $\text{mm per min}$.
(c(ii))[3]
The experiment was repeated where the light intensity was lower. Predict and explain how the bubble’s rate of movement would change.