Leaves of C4 plants show two type of cells, viz. outer mesophyll cells and inner spongy bundle sheath cells arranged in a circular manner like a necklace. Thus, leaves of C4 plants contain two types of chloroplast, viz. mesophyll chloroplast and bundle sheath chloroplast, i.e. dimorphic chloroplast. Thus, in these plants, C4 pathway occurs. This anatomy of leaves in C4 plants is called Kranz anatomy.