(a(i))[1]
State the name of the growth response shown by the plant shoot in Fig. 3.1.
(a(ii))[3]
Explain how the growth of the plant shoot in Fig. 3.1 is controlled.
(b)[2]
State two uses of water in a plant.
(c)[3]
Calculate the percentage increase in root length between 48 hours and 96 hours. Give your answer to two decimal places.