Question

Potometer works on the principle of

• A. Amount of water absorbed equals the amount traspired
• B. Osmotic pressure
• C. Root pressure
• D. Potential difference between the tip of the tube and that of the plant

Answer 1

The correct option is A Amount of water absorbed equals the amount traspired

A potometer or transpirometer is a tool used to measure the rate of water loss from the leaves of the plant. Potometer measures the rate of transpiration on the basis of the equal amount of water absorbed and transpired. Transpiration is the loss of water from leaves and stems and is an essential process in green plants. Several factors that can affect the rate of transpiration are humidity and temperature of the air, the intensity of light and wind.