Final answer:
Purple sulfur bacteria are phototrophic bacteria that do not produce oxygen during photosynthesis.
Explanation:
Purple sulfur bacteria are a group of phototrophic bacteria that perform anoxygenic photosynthesis, meaning they do not produce oxygen during the process. They use sulfur compounds as electron donors. An example of purple sulfur bacteria is Chromatium okenii.
Learn more about Phototrophic Bacteria here:
https://brainly.com/question/39046270
