Describe water uptake and water movement in plants. One of the most vital of plant functions is uptake of water from soil. The driving mechanism for water uptake and transport within the plant is transpiration , the loss of water from plant tissues in the form of a vapor .
Transpiration plays several important roles in keeping the plant alive.
Foremost, the evaporation of water from leaf surfaces allows plants to cool themselves. Without this ability the plants would quickly overheat and die on bright sunny days. A second major role of transpiration is facilitation of nutrient uptake into the plant. S oil nutrients must come in contact with roots for the plant to absorb them. One way that nutrients contact roots is through nutrient flow in the soil water solution.