The plant's uses of water are many. As a solvent water permits the absorption of raw materials of all kinds taken in by the plant. Within the plant body water performs many functions, some of it even entering into the constitution of the protoplasm itself. In leaving the plant in the form of vapor its evaporation cools the tissues when otherwise they might at times be injured by the radiant energy of the sun to which extensive portions of the plant must he exposed for photosynthesis. The familiar root-shoot type of land vegetation is the form-response of plants to the contrasting conditions of light and dryness on the one hand and darkness with moisture on the other.
Proceedings of the Iowa Academy of Science
©1923 Iowa Academy of Science, Inc.
Wylie, Robert B.
"Plants and the Surface Film of Water,"
Proceedings of the Iowa Academy of Science, 30(1), 337-343.
Available at: https://scholarworks.uni.edu/pias/vol30/iss1/54