WELCAME!!!
Sap is the fluid transported in xylem cells (tracheids elements or a vessel) or phloem sieve tube elements of a plant. Fluid found in other cell vacuole is sometimes referred to as "cell sap." Other liquid compounds found in plants or expressed by plants, such as latex, resin, mucilage and are sometimes erroneously referred to as sap.

Xilema sap consists mainly of water, with hormones, mineral elements and other nutrients and dissolved sap. Transportation and xylem sap is generally "basipetal" or upward from roots to leaves. During the past century, there has been some controversy regarding the transport mechanism xylem sap, although most plant scientists agree that today most of the elements of cohesion-supports the theory of tension xylem sap transport . Phloem sap consists mainly of water, sugars, hormones, and mineral elements dissolved in the sap. Phloem sap transported from sources (a place where carbohydrates are produced or stored) to sinks (a place where carbohydrates are used). The pressure flow hypothesis proposes a mechanism for phloem sap transport.

Maple tree sap xylem is the basic ingredient of maple syrup. In some countries (for example, Russia and Latvia) is common for the collection of spring sap of birch (so-called "juice Birch"), for human consumption, and the sap can be used fresh or fermented. "Birch juice" is slightly sweet and very refreshing, but tend to become bitter in late spring, the rule of thumb is to collect before any green leaves have appeared.