Anticlinal and Periclinal Cell Division:
Before we attempt understanding anticlinal and periclinal cell division, lets understand what cell division is. All living things, including plants and living creatures are made up of one cell or multiple cells. Cell division is the process by which the parent cell divides into two or multiple daughter cells.
Anticlinal and periclinal cell division are both different ways of cell division. Now let’s understand the difference between the two.
Periclinal cell divisions are the ones that occur parallel to the tissue or organ surface. As a result, we get rows of cells stacked one over the other.
Anticlinal cell divisions are perpendicular to the adjacent layer of cells. So, what you get is columns of cells adjacent to one another.
In simple words, anticlinal division adds more thickness and periclinal division adds length.
In botany, based on the kind of cell divisions we there are different kinds of plant meristems viz. Rib or File (when there’s division along only one plane, either periclinal or anticlinal), Plate (when there’s division along both planes, periclinal as well as anticlinal) and lastly Mass (when there’s no fixed plane of division, so there’s a mass of cells formed).
Periclinal cell divisions occur more in plants than in animals, though there are a few instances in animal embryos too.
Anticlinal division is at right angles to the surface. The anticlinal wall of a cell is arranged perpendicular to the surface of the plant body. An anticlinal division leads to the formation of anticlinal walls between daughter cells. Such a division allows the tissue to increase its circumference, thus increasing the girth of the organ.
Periclinal is parallel to the surface. Such a division results in an increase in girth of the organ thus adding length. In cylindrical organs, such as stems and roots, the term tangential may also be used in place of periclinal.
Refer to the diagram at the top of the article for a clear understanding.
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