Where does autotrophic nutrition takes place in a leaf?

Autotrophic nutrition in a leaf primarily takes place in the mesophyll layer, specifically within the chloroplasts found in the palisade and spongy mesophyll cells. These chloroplasts contain chlorophyll, which captures sunlight to facilitate photosynthesis, converting carbon dioxide and water into glucose and oxygen. The upper epidermis also plays a role by allowing light to penetrate the leaf, while the lower epidermis contains stomata for gas exchange.