Observed solely in vascular plats, this living, transportation tissue channels back and forth specifically sucrose, along with other vital, organic nutrients. This innermost layer of tree bark (which one must imagine with the exterior portion of the bark only visible in the photograph above), assumes a critical role in its positioning within the tree; as it transfers the products composed from photosynthesis; and if the phloem were to be torn away from the stem/trunk, it will deprive the roots of nutrients, as the phloem surrounds the xylem, leaving the plant to wither away to its death. Such an extraordinary process, as just described, is known as girdling (precisely, when the bark is torn off at a specific height). This intriguing concept, has been ingeniously used by farmers in agriculture, applying it to create certain produce that are large, due to receiving all the nutrition from the phloem. Moreover, in regards to how the phloem functions, it runs off positive hydrostatic pressure, while in others is polymer tap mechanism, transmits substances in multiple directions (up, down, left, right, etc.), and much more. Furthermore, this remarkable structure originates from the vascular cambium, specifically meristematic cells, as the primary phloem will be then constructed from the apical meristem; as the primary phloem’s counterpart, the secondary phloem derives from the vascular cambium, lying beneath the primary phloem. And once all these steps are completed, congratulations, a phloem is now completed! As can be seen, the phloem is quite crucial and necessary to a plant, maintaining the plants circulation; and without it, plants would be not as magnificent as they continue to be today.


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