What is the Meaning & Definition of crude SAP

In the field of Botany he referred to with the term of SAP to the liquid that is characterized by a thick consistency and circulating through the conductive vessels of plants. Its main function is the feed to the plant in question. Meanwhile, conduction tissue are the xylem and phloem, together, both the xylem and phloem, form a continuous transport network of SAP flowing completely through the body of the plant.
To the SAP flowing through the xylem from the roots and to the leaves by Woody tubes referred to popularly as the raw SAP and is composed of water, minerals and phytoregulators which are involved in regulating the growth of a plant, is mostly hormones of vegetable type concerned, either stimulate or suspend development in roots or in aerial parts.
The movement of the raw SAP through the plant is based on the so-called theory of the cohesion-tension, proposed by the physicist John Joly. It proposes the intermolecular attraction as a trigger of the journey that makes the liquid in the upward direction and counteracting the force of gravity.

Then, the elaborate SAP will be transported through phloem in basipetal way, or, from the place in which conform the leaves and stems in the direction of the root. It should be noted that the SAP flowing through the phloem is composed also by phytoregulators, minerals and sugars. In this case the SAP will be transported from the place in which carbohydrates are generated and saved to the location of the plant in which they will be used.
The plants also secrete other liquids such as: latex, resins and wax, that although they are called often as SAP is not correct so is because they are not.