Question

Which of the following elements is responsible for maintaining turgor in cells ?

Answer 1

When the cells are placed in a hypotonic solution (higher water potential or dilute solution as compared to the cytoplasm), water diffuses into the cell causing the cytoplasm to build up a pressure against the wall that is called turgor pressure.

Potassium is required for the maintenance of the turgidity of guard cells. In the guard cells, starch is converted into malic acid in the presence of light (during daytime).

Protons formed are used by the guard cells for the uptake of $K^{+}$ ions. In this way, the concentration of $K^{+}$ ions increases in guard cells.

So, the correct answer is "option C"