What substances form starch, sugar?

These substances are synthesized from inorganic substances. These include water and carbon dioxide. This cannot be done under laboratory conditions. This process takes place inside the membrane organelles of plant cells – chloroplasts. The process of creating organic matter by plants is called photosynthesis. It is possible in the presence of a light and dark phase, although it was previously believed that only sunlight is needed for photosynthesis, and only under the influence of sunlight does the synthesis of organic substances from chemical compounds take place.