What is Protective Fabric? »Its Definition and Meaning [2019]

Protective tissues are those that are responsible for protecting the plant, exiling it from the outside and possible external attacks , these are tissues that form an outer layer in the plant to thus Protect the plant from external agents such as desiccation, rain, or others that may affect its development.The protective tissue is also known as tegument, this is formed by a series of cells that cover the plant by isolating it from medium.In the roots of plants this type of tissue specializes in forming absorbent hairs that allow the plant to acquire soil water ; on the other hand, on the leaf it forms a kind of layer that waterproofs the stems or leaves so that they do not lose water and on the inside of the leaves the skin makes a modification to allow gaseous changes of photosynthesis and breathing, but also the exclusion of water vapor in perspiration.

Protective tissues can be classified into two types : the epidermis and suber or cork.

The epidermis : composed of those tissues that cover the stem and leaves ; It is a layer that is made up of a set of flat cells attached with each other as a pavement and with the outer wall covered with curtain, very waterproof that have functional cytoplasm, also characterized by not containing chloroplasts , therefore they do not perform photosynthesis. It has structures called stomata in order to enable the passage of gases, erected by cells in a cornered manner.One of the main functions of epidermal tissue is to guarantee the plant protection, however it also facilitates and regulates the exchange of substances ; Sometimes the cells of the epidermis are transformed into hairs that prevent the plant from losing these substances and protect it from friction.

Suber : the suberose tissues also known as corks, is responsible for replacing the epidermal in the stems and roots that has more than one year of life , this layer is made up of a series of dead cells or non-functional therefore they do not possess any cytoplasm, however you retain their cellular walls that soak up suberine, making them waterproof.These walls contain lenticels, which are empty channels that allow the exchange of gases with the atmosphere.The main functions of Suberous tissues are away from the plant from possible extreme temperatures , in addition to taking care of mechanical injuries and reducing perspiration.