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What is conductive tissue? »Its definition and meaning

Anonim

The conductive tissue are the tissues that carry out the transport of substances found in the inside of the plant that conducts the raw sap, which is the thick liquid that circulates through the conducting vessels of higher plants and its function is to nourish the plants from the root to the leaves, the elaborated sap is an aqueous solution, composed of amino acids and sugars, which are transported by the phloem in vascular plants from the leaves to the rest of the plant.

The conductive tissue is composed of the different types of cells, but in most parts they are those that originate from the same cells that unlike animals, any of the plants, no matter how old it may be, can have locators in good sites determined by groups of cells in juvenile stages with the ability to be able to divide the xylem and phloem physically in all plants.

In conductive tissue there are two types of tissues such as xylem and phloem.

The xylem is responsible for transferring the raw sap, which is a compound formed by water and a diverse variety of inorganic mineral salts that the root absorbs from the soil. But also known as nerve tissue or log that is a tissue formed by dead cells, these cells are tubular and are found in a well-developed cell wall, and they join each other to form tubes that rise from one place to another from the root towards the upper part, but these structures are also called woody vessels that are lignified at the level of the cell wall in order to ensure the rigor and hardness of the structure. The cells of the vesselsThey present the rupture or ulceration of the walls that allows the passage of the sap between the cells and are covered by the ends. In the surroundings of the woody vessels there is a cell called tracheids, which has a series of ruptures that facilitate the transport of xylem or raw sap.

The phloem is a tissue formed by living cells that is responsible for the transport of substances synthesized by photosynthesis which transform elaborated sap and its distribution over all cells of the plant. Also within them two types of cells are distinguished.

Sieve cells are spindle-shaped cells with a primary wall, specialized pits that group callose that are polysaccharide that permeates some membranes and plug the holes in the transverse walls of the grouped sieves, forming non-perforated sieve areas and are part of the phloem.

Attached or companion cells are parenchymal cells that can also be called fundamental cells of the plant but as soon as the rest of the cells appear, they have adapted to generate the structures that allow a comfortable life because it depends on the survival of the sieve cells. to which they are associated.