Plants do not have a circulatory system like that of some animals. if a given water molecule did "circulate" (that is, go from one point in a plant to another and back), it would require the activity

Transportation in plants would require the activity of the vascular bundles that is both the xylem and phloem.  Vascular bundles is a part of the transport system in vascular plants. The transport takes place in the vascular tissue which exists in two forms, the phloem and xylem, with the xylem transporting water and mineral salts to the plants from the soil, while the phloem transports/translocation of manufactured food from the leaves to all parts of a plant.