Question

Potometer measures the

• A. Rate of photosynthesis.
• B. Rate of transpiration.
• C. Rate of guttation.
• D. All of the above.

Answer 1

The correct option is B Rate of transpiration.

In plants, transpiration is the loss of water from leaves and stems. It is affected by humidity and temperature. A 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. Thus the correct answer is option B.