AP BIOLOGY

Detailed explanation-1: -The photometer is an apparatus used to determine the rate of transpiration in plants.

Detailed explanation-2: -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-3: -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-4: -A potometer measures the rate of water absorption, rather than directly determining the rate of transpira-tion, and is based on the assumption that the rate of water absorption is approximately equal to the rate of transpiration. As such, this approach is perfect for indirectly measuring transpiration.

Detailed explanation-5: -A potometer directly measures the rate of transpiration in leaves. A potometeris a device used for measuring the rate of water uptake of a leafy shoot . The causes of water uptake are photosynthesis and transpiration.