Hello
what do you mean by Transpiration ?

transpiration, in botany, a plant's loss of water, mainly through the stomates of leaves. ... He found that transpiration occurred from the leaves and that this process encouraged a continuous upward flow of water and dissolved nutrients from the roots.

Transpiration is the process of water movement through a plant and it's evaporation from aerial parts, such as leaves, stem flowers.

relative humidity, temperature and dew point -- are bound together in the mathematical relationship below. relative humidity changes when temperatures change. because warm air can hold more water vapor than cool air, relative humidity falls when the temperature rises if no moisture is added to the air. so i would say a