4 2 Water can move through plant cells. (a) The diagram shows the cells in a plant root. epidermal cell root hair Casparian strip xylem vessel (Source from: https://cronodon.com/BioTech/Plant_Transport.html) (i) On the diagram, draw the symplastic pathway that water takes from the soil to the xylem vessel. (2) (ii) The length of the root hair cell in the diagram is 60 mm. The magnification of the diagram is ×100. Calculate the actual length of the root hair cell in micrometres. (2) Answer .............................................................. µm Turn over 5 (b) Explain how the cohesion-tension model accounts for the transport of water from plant roots to leaves. (4) .................................................................................................................................................................................................................................................................................... .................................................................................................................................................................................................................................................................................... .................................................................................................................................................................................................................................................................................... .................................................................................................................................................................................................................................................................................... .................................................................................................................................................................................................................................................................................... .................................................................................................................................................................................................................................................................................... .................................................................................................................................................................................................................................................................................... .................................................................................................................................................................................................................................................................................... .................................................................................................................................................................................................................................................................................... .................................................................................................................................................................................................................................................................................... .................................................................................................................................................................................................................................................................................... .................................................................................................................................................................................................................................................................................... .................................................................................................................................................................................................................................................................................... .................................................................................................................................................................................................................................................................................... (Total for Question 2 = 8 marks)