Where in your spirogyra cell does photosynthesis, which creates the biological molecule used for fuel, occur?

Photosynthesis, which creates the biological molecule used for fuel occurs in the chloroplast of spirogyra cell. The chloroplast of Spirogyra is a long, spirally coiled ribbon shaped with Pyrenoids. Pyrenoids are protein containing structures, which store starch around them and arranged in a single series in the mid axial line of chloroplast.