The movement of food in phloem takes place by utilizing energy and this energy is obtained from ATP.Food is stored in plants in the form of sucrose but sucrose is a heavy molecule and can’t be transported so it is broken down into simple molecules called glucose. The transportation of food is achieved in plants via the phloem with the help of ATP by decreasing the water concentration in the required part of the plant. As a result, water enters the cell by the process of diffusion.As the cellular content increases, the pressure increases on the cell wall . Food is pushed into other cells where the pressure is low because of the increased pressure. In this way, the Phloem helps to transport food from the area of high concentration to low concentration.This allows the phloem to transport food according to the needs of the plant.