Is stroma autotrophic nutrition or heterotrophic nutrition?

Stroma itself is not directly classified as either autotrophic or heterotrophic nutrition; rather, it refers to the fluid-filled space within chloroplasts where the Calvin cycle occurs, facilitating the synthesis of glucose in plants. In the context of plants, autotrophic nutrition is the process by which they produce their own food through photosynthesis, which occurs in the chloroplasts, including the stroma. Therefore, the stroma plays a role in autotrophic nutrition by supporting the processes that convert carbon dioxide and water into glucose.