Grana are stacks of thylakoid membranes found within the chloroplasts of plant cells, playing a crucial role in the process of photosynthesis. These structures are where the light-dependent reactions take place, capturing sunlight and converting it into chemical energy. The arrangement of thylakoids in grana increases the surface area for light absorption, optimizing the efficiency of photosynthesis.
congrats on reading the definition of grana. now let's actually learn it.