grana
/ˈɡrɑːnə/
noun
- The plural of granum; stacks of thylakoid membranes inside plant chloroplasts where photosynthesis occurs.
- Under the microscope, the grana appear as dark green stacks within the chloroplasts.
- Photosynthesis takes place in the grana of the chloroplast.
- The number of grana in a chloroplast can vary depending on the plant species.