Concept:Water loss from plants in the form of water vapour is called transpiration.Explanation:• In plants, water is lost mainly through stomata, lenticels, and cuticle as vapour.• This loss of water vapour from plant surfaces is specifically known as transpiration.• Diffusion, osmosis, and evaporation are general processes, but the term for water vapour loss in plants is transpiration.Answer:D. transpiration