The process of root growth and long shoots is based on

Meristems, or educational tissues, have the ability to divide and form new cells. Due to the meristems, all other tissues are formed and a long (throughout life) plant growth is carried out. The apical meristems are located on the tops of the axial organs of the plant (root and shoot) and provide body growth in length

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.