How do trees grow? Detailed answer

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How do trees grow? Detailed answer

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How do trees grow?

The tree has three main parts. The roots hold the plant in the ground and absorb water and mineral salts from the soil. The trunk and branches carry the juice and raise the leaves to the sun. The leaves are the nutrient factory for the whole plant. The tree becomes taller and wider due to the growth of shoots and branches at the top. At the ends of the branches, new cells are constantly added. At the same time, all trunks, branches and twigs become thicker. Most trees have a special layer in the trunk between the main wood, through which the juices flow, and the bark. In this layer, the cells grow rapidly, the trunk develops due to this in width.

Every year this layer adds a ring to the old tree. By counting these rings on a cut of a tree, one can determine the age of the plant. Water and mineral salts come from the roots to the leaves through this substance of the trunk. The bark contains pathways through which nutrients from the leaves are carried throughout the tree.

The tree grows, the old rings of the trunk coarsen, lose contact with the leaves. They become mere reservoirs of water and eventually become hardwood. While water and mineral salts rise along the trunk, and the trunk itself grows, the process of producing nutrition for the whole plant is going on in the leaves.

Using the energy of the sun, the green substance in the leaves (chlorophyll) absorbs carbon dioxide from the air. It combines carbon dioxide with water and mineral salts dissolved in it, which came from the roots, and forms sugar and starch.

Author: Likum A.

Random interesting fact from the Great Encyclopedia:

Why does water remain on the skin of a person who has come out of it, and does not roll down?

Water remains on the skin of a person who has left it, and does not roll down, as, for example, from the fat-covered plumage of waterfowl, only because human skin is wetted with water: water molecules are attracted by the forces of intermolecular interaction to the skin stronger than to each other.

The cotton fabric of the towel is even more wetted with water - water molecules are attracted to the fabric of the towel more strongly than to the skin, and when wiped, they pass from the skin to the towel. Otherwise, the towel would simply smear the water over the skin without absorbing it (which is exactly what would happen if the towel was made of synthetic fabric that repels water).

Wetting - a surface phenomenon that occurs when a liquid comes into contact with a solid body - also manifests itself in the spreading of a liquid over a solid surface. It plays an important role in the impregnation and drying of porous materials, washing action, metal soldering, gluing, fluid flow under weightless conditions.

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