Trees and leaves
green plants and trees
Plants and Trees are not only useful for human but also animas and birds. So, go grow the plants don’t cut.
You save the trees and trees save you, through the environment.
Trees need nourish to grow. They obtain water and mineral from the oil and carbon dioxide from the air. Chlorophyll in their leaves harnesses the energy of the sun’s rays to make sugar, starch and cellulose.
Between the wood of a trees and its bark, there is a thin band of living cells called the cambium. New cells are formed ere; those which develop on the wood side of the cambium grow as wood and those on the bark side mature as bark. In this way, as tree grows older it increases in diameter.
Trees grow in height as well as in diameter. At the end of each branch or twig there is a group of living cells.
A cross section of a tree shows alternating bands of light and dark wood. The lighter bands have bigger cells are formed in spring; the dark bands consist of small, tightly packed cells made in the autumn.
Green plants and trees have to manufacture their food. The leaves are the food factories for plants and trees.
Leaves of fruit trees manufacture food that helps them to make fruit. For example, peaches are sweet. So peach tree leaves make sugar. By a process called photosynthesis, leaves manufacture sugar. They can carry out these processes because of chloroplasts, which contain chlorophyll inside their cells.
The roots of the plants or trees take water from the soil that eventually reaches the veins of the leaves. Carbon dioxide enters the tree’s cells through the leaves and manufactures the sugar. In doing so, oxygen is produced which exits the trees thought its leaves.
Leaves give off water, too. Part of the water taken in through the roots is used to make sugar. The rest is given off through the surface of the leaves.
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