Chlorophyll in photosynthetic prokaryotic bacteria is associated with-

In photosynthetic prokaryotic bacteria, chlorophyll is associated with membranous vesicles rather than plastids. Unlike eukaryotic plant cells, which contain double-membrane-bound organelles called plastids (such as chloroplasts) for photosynthesis [2], prokaryotes lack membrane-bound organelles [1]. Instead, photosynthetic bacteria utilize specialized internal membrane systems known as intracytoplasmic membranes (ICMs) or chromatophores [1]. These structures originate from invaginations of the cytoplasmic membrane and house the pigments and proteins necessary for light-dependent reactions [1]. In some groups like cyanobacteria, these are organized as thylakoid membranes [1]. Nucleoids and chromosomes in bacteria are associated with genetic material rather than photosynthetic pigments [1]. Therefore, the chlorophyll in these organisms is localized within these membranous vesicles or lamellae to increase the surface area for metabolic efficiency [2].

Sources

1. [2] Science ,Class VIII . NCERT(Revised ed 2025) > Chapter 2: The Invisible Living World: Beyond Our Naked Eye > A step further > p. 13
2. [1] Science ,Class VIII . NCERT(Revised ed 2025) > Chapter 2: The Invisible Living World: Beyond Our Naked Eye > 2.5 Why Is Cell Considered to Be a Basic Unit of Life? > p. 24