A student investigated transpiration. Fig. 3.1 is a diagram of the apparatus used in the investigation. Fig. 3.1 - The student watered the plant before the investigation started. - She measured the mass of water lost every five minutes. - The mass of water lost represents the rate of transpiration. - She took measurements in still air and with a fan moving air past the plant. - $$\(\quad\)$$ She plotted her results on a graph as lines labelled $$\(\mathbf{A}\)$$ and $$\(\mathbf{B}\)$$. Fig. 3.2 shows the results. Fig. 3.2 The student repeated the investigation using the fan at half-speed. Draw a line on Fig. 3.2 to show the result you would expect when the fan is at half-speed.

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