Buttercup root. Light micrograph of a section through the root of a buttercup plant (Ranunculus sp.). The root contains a central vascular bundle (within blue circle), comprising xylem (blue/green) and phloem (pink) tissues. Xylem is responsible for transporting water from the roots upwards to the rest of the plant. Phloem carries sugars and other nutrients from areas that produce them (such as leaves) to those that require them (such as developing fruits).
Growth and Development
To succeed and grow simultaneously in two entirely different environments – air and soil – requires a myriad of adaptations, starting with cellular modifications into specialized kinds of tissues (groups of similar cells that are organized in a structural and functional unit) followed by development of organs (structures composed of several kinds of tissues grouped in a structural and functional unit).
The organs of a plant are comprised of three basic tissue systems, including the dermal, vascular, and ground tissue systems . These three motifs are continuous throughout an entire plant, but their properties vary significantly based upon the organ type in which they are located. Now we look at the structure and arrangement of plant tissues and cells in mature plant organs.
Cells of a plant or an animal acquire a variety of shapes and structure for specific functions they perform. They do so in groups called tissues. Tissue is a group of cells with a common function, structure or both. All cells of a tissue have common origin. Tissues can be simple, consisting of a single cell type, or complex, consisting of more than one cell type.
Plant Tissues: These are basically of two types–
1.Meristematic tissue and