Question

Which of the following is not a correct limitation while using potometer?

• A. Introducing the air bubble is not easy
• B. Potometer does not measures the accurate rate of transpiration
• C. Water retained by the plant is neglected
• D. None of the above

Answer 1

Answer: (C)

Water retained by the plant is neglected

A Potometer or a transpirometer is a device used to measure the uptake of water by plants.

Some of it's limitations do include :

1. Difficulty in introducing air bubble.

2. Water retained by plants is neglected because it is very minute.

3. Rate of transpiration measured is not accurate as some water is used for photosynthesis as well.

Since the water retention by plants is neglected because it is very minute, it doesn't really come out as limitation

So the correct answer is 'Water retained by plants is neglected'.