Chlorophyll is the main pigment of photosynthesis. The chloroplasts contain chlorophyll inside the quantosomes. Chlorophyll pigments are chlorophyll-a (green), chlorophyll-b (blue-green), chlorophyll-c, chlorophyll-d, chlorophyll-e, carotene (orange), xanthophyll (yellow),
Phycocyanin (blue), phycoerythrin (red), bacteriochlorophyll, chlorobium chlorophyll etc. Chlorophyll-a is of two types. Chlorophyll- ÔaÕ 673 and chlorophyll- ÔaÕ 683. The chemical components of chlorophyll are carbon, hydrogen, oxygen, nitrogen and magnesium. Bacterial chlorophyll is called bacteriochlorophyll (C55H74O6N4Mg). Like- Rhodopseudomonas, Rhodospirillum, Chlorobium etc.