The rate of transpiration can be measured with the help of

Options

(a) auxanometer
(b) refractometer
(c) spectrophotometer
(d) potometer

Correct Answer:

potometer

Explanation:

Potometer is an instrument or apparatus with the help of which, rate of transpiration can be measured. Main types of potometers are simple potometer, Farmer’s potometer and Ganong’s potometer. The whole instrument is made of glass and is consisted of a long tube, having a side tube, bent at right angles. A fresh plant shoot is cut under water and is inserted into the side tube through a cork, fitted into the mouth of this tube. The whole apparatus is filled with water and the joints are made airtight.