Bacteriochlorophyll is a pigment found in certain bacteria that allows them to perform photosynthesis. Unlike chlorophyll, which is found in plants, bacteriochlorophyll absorbs light in different wavelengths, primarily in the infrared range. This adaptation enables these bacteria to thrive in low-light environments, such as deep water or soil. There are several types of bacteriochlorophyll, including bacteriochlorophyll a and bacteriochlorophyll b, each with unique properties. These pigments are crucial for the energy conversion process in anoxygenic photosynthetic bacteria, which do not produce oxygen as a byproduct of photosynthesis, distinguishing them from oxygenic photosynthetic organisms like plants.