Structure of Xylem and Phloem
The critical structure in the stem is the vascular system. The different types of plant cells include- collenchyma sclerenchyma parenchyma xylem and phloem. Xylem And Phloem Structure Teaching Biology Biology Notes School Study Tips Nitrogenous bases are closely packed together on the inside and phosphates form an outer backbone Shape. . In dicotyledonous and coniferous ie woody trees and shrubs the defining structure that permits this conversion is a layer of meristematic cells called the vascular cambium that organizes between the primary xylem and primary phloem of the vascular cylinders. From the scattering pattern produced by a DNA molecule certain inferences could be made about its structure. The word xylem is derived from the Ancient Greek word ξύλον xylon meaning wood. The cambium forms the wood and the inner bark of the tree and is responsible for thickening the plant. Xylem is one of the two types of transport ti...