The diagram given below is an experimental set-up to demonstrate a metabolic process in plants. Study same and answer the following questions.

(i) Name and define the physiological process being studied.

(ii) What is the aim of the above experiment?

(iii) Draw a neat diagram of an opened stoma and label the guard cells and stoma.

(i) Transpiration
Transpiration is the loss of water in the form of water vapour from the aerial parts (leaves and stem) of the plant.

(ii) The aim of the above experiment is to demonstrate the different magnitudes of transpiration from the upper and lower surfaces of dicot leaf.

(iii) Below diagram shows an opened stoma with guard cells and stoma labelled: