Transpiration is the evaporative loss of water vapour from a land plant.
It occurs chiefly through the stomata of leaves. Transpiration provides the motive force that raises water and solutes from the roots through the xylem. Turtles are reptiles and animals do not transpire. The greatest physiological threat to life on land is dehydration. Terrestrial reptiles minimise this danger with dry and scaly skin that is relatively impermeable to water.