How and in what cells and tissues of leaves is sugar formed?

Glucose is formed in the columnar and spongy tissue of plant leaves. All thanks to the presence of chloroplasts in it. They perform biochemical synthesis under the influence of sunlight. There is also the dark phase of photosynthesis, which is equally important. The plant needs glucose as a source of energy. She is also able to stock up in the stem of plants. Herbivores are incapable of producing glucose, so they use ready-made organic matter to eat plants. Predators obtain these substances by eating herbivores, since they are not adapted to digest plants.