NEET2005BotanyTransport in PlantsActual
Potometer works on the principle of:
Options
- Aosmotic pressure
- Bamount of water absorbed equals the amount transpired
- Croot pressure
- Dpotential difference between the tip of the tube and that of the plant.
Correct answer
B. amount of water absorbed equals the amount transpired
Step-by-step solution
A potometer is a device, which is used to measure water uptake by shoot during transpiration. It is also known as transpirometer. The Ganong's potometer is used to measure the transpiration rate in a laboratory (Ref. to Fig. 27.5) Related Theory In plants, transpiration is the loss of water from leaves and stems. Potometer is a tool used for measuring the rate of transpiration. The rate of transpiration cannot be accurately determined using a potometer because all the water that is taken by the plant is not involve