The Physiology of the Ascent of Sap

Among the fundamental activities in the life of the plant are the absorption of water from the soil and the conduction of the sap to all parts of the body. By them the plant obtains its inorganic food-material from the dissolved constituents of the soil, and is supplied with the water necessary to maintain its cells in that state of turgor without which its growth and various life-movements would become arrested.