Potometer works on the principle of

Options

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

Answer

**Step-by-Step Solution:**

1. **Understanding Potometer**: A potometer is a device used to measure the rate of transpiration in plants. Transpiration is the process through which plants lose water in the form of vapor.

2. **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 as a plant absorbs water from the soil, an equivalent amount of water is lost through transpiration.

3. **Explanation of the Principle**: When a plant takes up water through its roots, some of that water is used for photosynthesis and other physiological processes, while the rest is lost to the atmosphere through small openings in the leaves called stomata. The potometer measures this loss, allowing us to infer the rate of transpiration.

4. **Conclusion**: The correct answer to the question about the principle on which a potometer works is that it is based on the relationship between the amount of water absorbed by the plant and the amount of water transpired.

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

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