Talk about the roles of plant organs in photosynthesis.

In eukaryotic cells, photosynthesis takes place in the chloroplasts of chlorophyll parenchyma of leaves (mesophyll). Carbon dioxide enters the leaf and oxygen exits through the stomata. The water and minerals collected from the roots flow through the stem by a conductive tissue (xylem) and reach the leaves by the ribs. The sugars produced by photosynthesis, leave the leaves by the ribs and are carried by the conductive tissue of the organic sap (phloem), to non-chlorophyllous organs. The reactions of the light dependent phase of photosynthesis take place in the thylakoid membranes found inside the chloroplast. The reactions of the dark phase take place in the stroma of the chloroplast.