How does tree moves water from the roots to the top of the tree?

Transpiration is a key part to the transport system of a plant. Transpiration is the loss of water vapor to the atmosphere through leaves and it works because water diffuseses or evaporates. That means water always moves from wetter to drier even against gravity. Inside a tree, water is pulled from the roots up to the leaves through a network of microscopic tubes called xylem made up of dead cells that have holes at either ends that are joined together to make hollow tubes that water can flow through. Water is sucked up through the xylem. The tension created by transpiration is strong enough to pull water up five hundred feet. The tallest tree is Australia's Eucalyptus Regans, which can grow to be over three hundred feet high. In the leaves, the water evaporates through tiny holes, which open and close to regulate the amount of evaporation.