rate of transpiration can be meausured by

1. ganong’s potometer
2. porometer
3. auxanometer
4. respirometer

Apotometer(from Greek ποτό = drunken, and μέτρο = measure) —sometimes known as atranspirometer— is a device used for measuring the rate ofwateruptake of aleafyshoot. The causes of water uptake arephotosynthesisandtranspiration.Everything must be completely water tight so that no leakage of water occurs.