The stages of an investigation using plant tissue are listed below.

● A freshly cut slice of plant tissue was rinsed in distilled water, dried and weighed.
● This slice was placed in a solution with a water potential of – 4 arbitrary units for thirty minutes.
● The slice was removed from the solution, dried and reweighed.
● The mass of the slice was the same as its original mass.
Which conclusions can be drawn from this investigation?

1) The water potential of the cells of the plant tissue is – 4 arbitrary units.
2) The cell sap of the plant tissue has a lower water potential than the surrounding solution.
3) There has been no net movement of water.
4) The cell wall of the plant tissue will not be in contact with the cell membrane.