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Leaves are the energy power plants of green plants and, next to the roots, the most important nutritional organs. In the vine, like the eyes (summer and winter eyes), tendrils and inflorescences (clusters), they form as lateral outgrowths on the nodes of young growing shoots. As the shoot tip grows in length, new leaves continuously branch off, which develop in a variety-specific manner. With the help of leaf pigments such as chlorophylls, carotenoids and flavonoids, the light energy from the sun is absorbed by the leaves and converted into energy-rich glucose (grape sugar) and oxygen during photosynthesis using carbon dioxide and water. The carbon dioxide required for this is absorbed from the air through the stomata (stomata ) mostly on the undersides of the leaves. The oxygen produced during the day escapes to the outside through these small stomata

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