Majority of potometers measure the rate at which water is:

Which process is shown in the figure below?

During which process in the leaf is the water potential positive?

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 $Q$.

Observe the diagram and answer the following.
$(a)$ Which of these shows a higher water content $(i)$ or $(ii)$?

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.