Fig. 1 shows the movement of water through the cells in the root.
Fig. 1
Identify X, Y and Z in Fig. 1 above.
Explain the effect that Z in Fig. 1 has on the movement of water through the root.
Movement of water into the root occurs by osmosis.
State how plant roots ensure that there is a water potential gradient between the surrounding soil and the cells of the root.
The movement of water across a plant root, as shown in Fig. 1, generates root pressure. Root pressure plays a role in establishing and maintaining the transpiration stream of a plant.
Other than root pressure, explain how the transpiration stream of a plant is maintained.
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