Transpiration In Plants: What is Transpiration? Transpiration may be defined as loss of water in the form of water vapors, from aerial organs of living plants. Although plants absorb large quantities of water, through their roots, from the soil yet a very little quantity of it is utilized for maintenance of their life. The rest of the absorbed water is lost from the plant either in the form of vapor or liquid. The loss of water from the plants in the form of vapors is called transpiration while the loss of water in the form of liquid is called guttation. … Continue reading Transpiration In Plants