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What are the advantages that the Wax on the leaf of the plant brings to the plant?
What are the advantages of the wax on the plant's leaf? What would happen if the wax wasn't there?
The waxy covering on plant leaves, young stems, and fruit is called the "cuticle". It is composed of cutin, a wax-like material produced by the plant that is chemically a hydroxy fatty acid. The purpose of this covering is to help the plant retain water. In arid regions, that is very important. In wetter regions, the waxy coating may help prevent infection by disease organisms. The waxy material may exist in the form of flat plates, or a mass of threads. It may be loosely formed, allowing easy passage of gases and water vapor, or it may be tightly formed, interfering with gas exchange.
In some plants, the waxy coating causes a bluish coloration. This bluish coating of wax can be rubbed off, leaving a greener appearance. It is this waxy coating that causes a blue spruce to appear blue.
The miracle in the plant leaves (Harun Yahya)