Plant Cell Definition and Meaning
A cell is the fundamental unit of a living organism that has the capacity for independent reproduction. There are two main types of cells: eukaryotes (which house genetic information in a cell nucleus) and prokaryotes (whose DNA is dispersed in the cytoplasm since they do not have a differentiated cell nucleus).
A vegetable, on the other hand, is an organic being that grows and lives without changing its place by voluntary impulse. Vegetables have the ability to synthesize their own food through the process of photosynthesis.
The plant cell, therefore, is the one that forms this type of organism. They are eukaryotic cells, whose nucleus is delimited by a membrane. The cell wall is cellulosic and has the necessary rigidity to prevent changes in position and shape.
There are many types of plant cells. However, among the most significant we could highlight the following:
Sclereids, are identified because they make up very hard tissues such as the peels of certain fruits.
Meristematics. Under this name are the plant cells that are responsible for ensuring that any plant can grow and develop both lengthwise and widthwise.
Colenquimáticas, are those that are known fundamentally for their supportive function.
Parenchymal. In this case, this term is used to refer to all those plant cells that participate in photosynthesis and in the storage of all those substances that are used as a reserve.
Plant cells contain a central vacuole (which stores and transports water, nutrients, and waste) and plastids (structures that synthesize food). The presence of chloroplasts, on the other hand, turns plants into autotrophic beings that produce their own food through photosynthesis.
The existence of plasmodesmata (cytoplasmic bridges) allow communications between plant cells. These bridges, which are usually located in the areas of the cell where the wall is thinner, facilitate the circulation of solutes and water.
However, we must not forget another important series of parts that shape every plant cell. Among them we should highlight the chromatin, the mitochondria, the tonoplast, the dictionsome, the vacuole, the nucleolus, the peroxisome or the thylakoid.
Among the main differences between plant cells and animal cells, the cellulose wall, chloroplasts and the existence of a single valve in the case of plant cells stand out.
The cell wall or cellulose is a fundamental element in all types of plant cells and is basically made up of two classes: the primary and the secondary wall. The first is characterized by being thin, flexible and especially in what are young cells or that are in the process of development and growth.
The secondary wall, for its part, is the one that appears in the primary wall once it has proceeded to stop its growth phase.
The vacuole, on the other hand, is the one that functions as a store or reservoir for water as well as another important series of chemical substances.