What is sap circulation?

Sap circulation refers to the movement of sap, a nutrient-rich fluid, through plants. In vascular plants, this process primarily occurs in two systems: the xylem, which transports water and minerals from the roots to the leaves, and the phloem, which distributes sugars and other organic compounds produced during photosynthesis. This circulation is essential for plant growth, nutrient distribution, and overall health. It also plays a critical role in responding to environmental conditions and stresses.