Grana

Grana are small structures within chloroplasts, the green parts of plant cells responsible for photosynthesis. They appear as stacks of tiny, disc-shaped membranes called thylakoids. These stacks enhance the plant’s ability to capture light energy efficiently, facilitating the process of converting sunlight into chemical energy. Think of grana as organized layers that help plants gather and use sunlight more effectively, playing a vital role in sustaining plant life and, by extension, life on Earth.