XylemPhloemXylem tissue helps in the transport of water and minerals.Phloem tissue helps in the transport of food.Water is transported unidirectionally upwards from roots to all other plant parts.Food is transported in both upwardand downward directions.Transport in xylem occurs with the help of simpleTransport of food in phloem requiresphysical forces such as transpiration pull.energy in the form of ATP.