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Question

Potometer measures the


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

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.

Biology

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