Conductive tissue consists of living or dead elongated cells that look like tubes.
In the stem and leaves of plants are bundles of conductive tissue. In the conducting tissue, vessels and sieve tubes are isolated.
Vessels are dead hollow cells connected in series, the transverse partitions between which disappear. Through the vessels, water and minerals dissolved in it from the roots enter the stem and leaves.
Sieve tubes are elongated non-nuclear living cells, connected in series with each other. Through them, organic matter from the leaves (where they were formed) move to other plant organs.
On the cut of a tree trunk, among other layers, 2 layers can be distinguished along which substances move: wood and bast.
The composition of wood includes vessels through which water and minerals from the soil rise up.
The bast contains sieve tubes, along which organic substances move from the leaves (where they are formed) downward.
If you place white flowers of a carnation in vessels with solutions of food dyes, then the water with dyes rises up the conductive tissue of the stem and paints the flowers in the color corresponding to the dye.
You can also do this experiment at home by purchasing food coloring from your local supermarket. You can use any other white flowers instead of carnations.
In spring, birch sap with accumulated sugar reserves begins to flow upward through the conductive tissue (wood) from the roots. This is used by people who drill a hole in the trunk of a birch, place a tube in it and get birch sap.
Educational tissue is found in all growing parts of the plant.
It consists of small cells with a thin membrane and a relatively large nucleus, which are continuously dividing. The rest of the plant tissues are formed from the cells of the educational tissue.
By examining the apex or tip of a plant root under a microscope, tiny, densely packed cells of educational tissue can be seen.
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.