Fill in the table “Cellular structure of the stem”
| November 13, 2020 | Education
| Layer | the cloth | Structure | Function |
| Bark
(skin Bung) |
Covering | The skin is formed by one layer of cells with dense membranes (present only in young shoots).
The cork consists of several layers of dead, air-filled cells. Lentils are formed by large cells of the main tissue with large intercellular spaces |
Protection of deeper cells from damage, excessive evaporation of moisture, penetration of pathogens. Gas exchange is carried out through the lentils |
| Bast | Conductive,
Storing, mechanical |
The inner part of the bark. Consists of sieve tubes, companion cells, storage cells and dead cells of mechanical tissue, which give strength to the bast | Conducting organic matter from leaves to root, storing nutrients |
| Cambium | Educational | Formed by one layer of living narrow long cells with thin membranes | Cell division and stem growth in thickness |
| Wood | Main,
conductive, mechanical |
It is formed by cells of various sizes and shapes: the vessels of the conductive tissue consist of dead cells with thickened walls. Wood fibers are made up of thick-walled cells | Conduction of water and minerals, support function |
| Core | Main storage | Consists of large, thin-walled, loosely adjacent cells | Storing nutrients |
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.