Thanks to the cell wall, each individual plant cell retains its shape and performs a protective function.
Lignification of the cell wall leads to an increase in the strength of each cell and the organism as a whole. When sampling, the cell wall becomes impervious to water and gases. The outer walls of the cells of the epidermal integumentary tissue are subjected to kutinization. The cuticle protects the plant from excessive evaporation of water from the surface of the plant. With the mineralization of the cell wall, mineral substances give it (the wall) hardness and fragility. The stiffness of stems and leaves acquired as a result of silicification serves as a protective agent against snails, and also significantly reduces the eatability and forage value of plants.
Remember: The process of learning a person lasts a lifetime. The value of the same knowledge for different people may be different, it is determined by their individual characteristics and needs. Therefore, knowledge is always needed at any age and position.