Definition of
Plant tissue
Tissue It is a concept with several uses. It can be a material, a fabric or something that is formed by intertwining different components. In the field of zoologythe botany and the anatomyon the other hand, a tissue is a set of cells that, through a certain order and certain characteristics, act together to fulfill a function.
Vegetablefor its part, is that linked to plants: a living being that is born, grows, develops and dies but, unlike animals (including humans), cannot move of its own free will.
The idea of Plant tissuetherefore, is associated with a grouping of cells in the plants. These tissues arise from the division of the cells that make up the embryo of a seed. Certain cells, in this way, acquire an important specialization that allows them to develop different functions.
It is possible to differentiate between meristematic plant tissues and the adult plant tissues. Meristematic plant tissues divide through the mitosis throughout the life of the specimen, giving rise to adult plant tissues.
Going deeper into these concepts, we can say that merismatic cell tissues (also called embryonic) are formed by cells capable of dividing, characterized by their small dimensions, their scarce specializationthe thinness of its walls, and for having large nuclei and small vacuoles (this is the name given to the cytoplasmic cavities within a cell).
Merismatic plant tissues, in turn, are divided into two types: primaries and the secondary. The primaries are in charge of the development of the embryo in the seed and of the physical expansion of the plant throughout, that is, of its longitudinal growth. They are found in the buds of the stem and in the root, both at the ends (parts of the vegetables that are called apical and they can be the tip of an organ such as a leaf) as well as in the axillary areas, from where branches and leaves will emerge in the future.
Secondary merismatic plant tissues, for their part, consist of cells from other, adult cells, which recover for a limited time the ability to reproduce and they are in charge of the thickening of the plant and the formation of new conducting vessels.
In second place we have the adult plant tissues, also known as definitive either permanent, whose cells no longer have the ability to divide. However, it has been observed that they sometimes recover said function temporarily, as indicated in the previous paragraph; this occurs due to the action of fire or mechanical aggression. The definitive tissue can appear in several types, which come together to form systems and are found in many parts of the plant.
Among these adult tissues, in turn, it is possible to differentiate the primary tissues (in charge of the vital functions of the plant) and the secondary tissues (typical of woody plants, are responsible for protecting the organism).
Some of the plant tissues are listed below:
* epidermis: It is the outermost layer of young plants, and covers their surface in their entirety when they have a primary structure. Also Known As epidermal tissue and provides the plants with protection against external factors, in addition to collaborating with the maintenance of their structure;
* collenchyma: is part of the group of bra fabrics of herbaceous and young plants. Its action contributes to the flexibility of the petioles, leaves and stems;
* xylem: she drives water and mineral nutrients by a route that begins at the root and reaches the various organs;
* parenchyma: Found in most plants and forms a continuous shade. It is used for the reservation and transfer of items.