1. It is a budding bacterium with variable bacteriochlorophyll a production. 2. It contains spheroidenone, does not synthesize bacteriochlorophyll anaerobically, but shows aerobic phototrophic activity. 3. They contain bacteriochlorophyll c and chlorosomes. 4. Chromatophores contain bacteriochlorophyll pigments and carotenoids. 5. Several other groups of bacteria use the bacteriochlorophyll pigments ( similar to the chlorophylls ) for photosynthesis. 6. All other phototrophic systems in bacteria, algae, and plants use chlorophylls or bacteriochlorophylls rather than bacteriorhodopsin. 7. Photosynthesis is achieved using a Type 1 Reaction Centre using bacteriochlorophyll ( BChl ) " a ". 8. Neil Isaacs says, " the ring of 800-nanometer bacteriochlorophylls is just an additional energy source ." 9. The photosynthesis of " R . rubrum " differs from that of plants as it possesses not chlorophyll a, but bacteriochlorophylls . 10. Due to the presence of chlorophyll " a ", as opposed to bacteriochlorophyll , photosystem II absorbs light at a shorter wavelength.
