Q27 / 200 · NEET 2005 · Botany
Potometer works on the principle of:
- Aosmotic pressure
- Correct answerBamount of water absorbed equals the amount transpired
- Croot pressure
- Dpotential difference between the tip of the tube and that of the plant.
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 involved in transpiration.
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 involved in transpiration.
Hence, the correct answer is option: 'B'.