Roots+2

** Tap root ** system The first root produced from a seed is called the **radicle**. In many [|dicotyledonous] plants this root greatly enlarges to become the most prominent root of the plant and is known as a tap root. Many smaller branch roots may grow from the tap root. In monocotyledonous plants, the radicle is short lived and is replaced by numerous roots of more or less equal size. These roots are **adventitious** which means they can grow from plant organs other than roots e.g. stems.
 *  Fibrous root system **

Primary Root Tissues and Structure
The organization of tissues in the primary root is simpler than in the primary stem because no leaves are produced on the roots and, consequently, there is no need to connect the vascular system laterally to offshoots. The primary body, produced by the three primary meristems, consists of a central cylinder of vascular tissue, the **stele**n place, surrounded by large storage parenchyma cells—the **cortex**—on the outside of which lies a protective layer of cells—the **epidermis**. Root Functions -Anchors plant in place -Stores excess sugars and absorbs water and minerial nutrients. Shot of a computer simulation of the process of osmosis Net movement of solvent is from the less-concentrated (//[|hypotonic]//) to the more-concentrated (//[|hypertonic]//) solution, which tends to reduce the difference in concentrations. This effect can be countered by increasing the pressure of the hypertonic solution, with respect to the hypotonic. The [|osmotic pressure] is defined to be the [|pressure] required to maintain an equilibrium, with no net movement of solvent. Osmotic pressure is a [|colligative property], meaning that the property depends on the [|molar concentration] of the solute but not on its identity.
 * Osmosis** is the [|diffusion] of water through a [|semi-permeable membrane], from a solution of low solute concentration (high water potential) to a solution with high solute concentration (low water potential), up a solute concentration gradient. The simplest definition is that it is diffusion of water across a semipermeable membrane.[|[1]] It is a physical process in which a solvent moves, without input of energy, across a semi-permeable membrane (permeable to the solvent, but not the solute) separating two solutions of different concentrations.[|[2]] Osmosis releases energy, and can be made to do work[|[3]], as when a growing tree root splits a stone.