False colour transmission electron micrograph of a dividing chloroplast in the leaf of the pea plant,Pisum sativum,showing the central area constricting to partition the cell into two daughter cells. Within the chloroplast are the stacks of grana; flattened,membranous layers enclosing a space (threadlike),which store the photosynthetic pigments,the chlorophylls. A large white starch body,one of the products of photosynthesis,is visible in the right hand cell. The patchy white areas scattered throughout the chloroplast are nucleoids,the sites of chloroplast DNA. Magnification: X40 000 at 10x8 inch,X5700 at 35mm size |