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

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The xylem transports water and minerals from the roots to the leaves, while the phloem transports sugars and other organic molecules from the leaves to other parts of the plant. Together, they make up the plant's vascular system, which functions similarly to a circulatory system in animals. Therefore, if a water molecule were to circulate throughout a plant, it would require both the xylem and the phloem.

Plants Do Not Have a Circulatory System Like That of Some