Practice question · Multiple choice
Why does a plant wilt when it loses water?
Hints
- Ask what holds a non-woody plant upright in the first place.
- Turgor pressure from full vacuoles pressing outward against rigid walls provides the support.
Show the answer
A. The vacuoles lose turgor pressure, so the cells no longer press against their walls
Why
A non-woody plant is held up by turgor: full vacuoles press outward against rigid walls, and the tissue becomes stiff. Lose the water and the pressure falls, so the tissue goes limp, support is hydraulic, not skeletal.
Practise Mitochondria, Plastids and the Plant Cell
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