Question

Which of the following is used for determining the rate of transpiration in plants?

• A. Tensiometer
• B. Auxanometer
• C. Porometer
• D. Potometer

Answer 1

The correct option is D Potometer

A potometer or transpirometer is a device used to measure the rate of water uptake of a leafy shoot. The causes of water uptake are photosynthesis and transpiration. There are two main types of potometers the bubble potometer and the mass potometer. Whereas tensiometer is an instrument to determine water potential, an auxanometer measures the increase or rate of growth in plants and porometer measures the area of the stomatal openings of a leaf by the amount of a gas passing through a given area of it. Thus, the correct answer is option D.