What is photo heterotrophs?

Photoheterotrophs are organisms that obtain their energy from sunlight but obtain their carbon from organic compounds made by other organisms. They combine photosynthesis with the consumption of organic substances. They are common in aquatic environments where there is abundant organic matter. Examples of photoheterotrophic organisms include purple non-sulfur bacteria, heliobacteria, and green non-sulfur bacteria. These bacteria use pigments such as bacteriochlorophyll, which absorbs light in the infrared range, enabling them to utilize small amounts of sunlight. Although they generate ATP via photosynthesis, photoheterotrophs are also capable of carrying out respiration in order to acquire energy.