The diagram shows the outline of a xerophytic leaf that had been left for 45 minutes in different conditions, P and Q.
Which statements about the cells in layer Y of the leaf in each of the conditions P and Q after 45 minutes are correct?
1) There is a less negative water potential in P than in Q.
2) The cells may be turgid in P and plasmolysed in Q.
3) The cells are less turgid in P than in Q.
4) There is no net diffusion of water into Y in either P or Q.
1, 2 and 4
2 )
1, 3 and 4
3 )
1 and 3 only
4 )
2 and 4 only
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