Potometer works on the principle of

Options

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

Answer

### Step-by-Step Solution:

1. **Understanding Potometer**: A potometer is an instrument used to measure the rate of water uptake by a plant, which is often indicative of the rate of transpiration.

2. **Function of Potometer**: The main function of a potometer is to measure how much water is absorbed by the plant over a certain period of time. This absorption is closely related to the process of transpiration, where water is lost from the plant's leaves.

3. **Principle of Potometer**: The potometer operates on the principle that the amount of water absorbed by the plant is equal to the amount of water transpired. This means that for every unit of water that is taken up by the roots, an equivalent amount is lost through transpiration.

4. **Conclusion**: Therefore, the potometer works on the principle that the amount of water absorbed by the plant equals the amount of water transpired.

### Final Answer:
The potometer works on the principle that the amount of water absorbed by the plant equals the amount of water transpired.

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