What will be the effect of accumulation of potassium ions in guard cells?

Excessive loss of water causes wilting of leaves; it can be prevented by:

Which of the following is not related to the structure of stomata?

The process by which plants lose water in liquid form is called $P$,while the process by which plants lose water in the form of vapor is called $Q$.

Choose the incorrect sentence regarding the compromise between transpiration and photosynthesis.

Read the following statements carefully and choose the right answer from the codes given below:
$I$. $PMA$ and silicon oil of low viscosity are considered as antitranspirants.
$II$. $BAP$,$NAA$,and cobalt chloride are also used as antitranspirants.
$III$. Abscisic acid $(ABA)$ affects the mechanism of opening and closing of stomata.
$IV$. Starch of guard cells is converted into $PEP$ (phosphoenolpyruvate) ions by the process of hydrolysis.
$V$. Potometer works on the principle of potential difference between the tip of the tube and that of the plant.
$VI$. Transpiration rate is directly proportional to the relative humidity.