A granum (plural grana) is a stack of thylakoids in the chloroplast, an organelle found in plants and eukaryotic algae where photosynthesis takes place. Chloroplasts can have from 10 to 100 grana. They use photoexicited electrons to convert solar energy (sunlight) into chemical energy (sugar and oxygen. Many grana may be found within a chloroplast, and chloroplast DNA means these can replicate independently of the chloroplast itself. A thylakoid is a phospholipid bilayer membrane internal to chloroplasts. ... The inside of a chloroplast Chloroplasts are organelles found in plant cells and eukaryotic algae that conduct photosynthesis. ... Hi Im Jeremy Kingdoms Animalia - Animals Fungi Plantae - Plants Protista A eukaryote (IPA: ), also spelled eucaryote, is an organism with a complex cell or cells, in which the genetic material is organized into membrane-bound nucleus/nuclei. ... Leaf. ...