AP BIOLOGY

Detailed explanation-1: -A potometer is a device, which is used to measure water uptake by the plant shoot during transpiration. It is also known as transpirometer. Ganong’s potometer is used to measure the transpiration rate in a laboratory.

Detailed explanation-2: -The device consists of a vessel containing water. A cut stem of a plant or a small plant with roots is placed in this vessel. It is sealed with wax or any other material. This vessel is connected to a water reservoir and a graduated capillary tube.

Detailed explanation-3: -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.

Detailed explanation-4: -Potometer. A potometer can be used to measure the rate of transpiration that’s proportional to water uptake. Transpiration cannot be measured directly as some of the water will be used in photosynthesis.

Detailed explanation-5: -A Typical Ganong’s Potometer follows the Below-Mentioned Design Principle: Length of Capillary Tube-A bubble is forced into the capillary. As the water is absorbed by the plants, the bubble starts moving. By spotting regular markings on the tube, it is possible to calculate the amount of water absorbed.