Which gas is produced by plants during photosynthesis?

During the process of photosynthesis, plants take in carbon dioxide from the atmosphere and water from the soil. Using sunlight as a source of energy, they convert these raw materials into glucose (a type of sugar) and oxygen. The oxygen produced is a byproduct of this process and is released into the atmosphere. This is crucial not only for plants but also for animals and humans, as oxygen is essential for respiration. The other gases listed—hydrogen, nitrogen, and carbon monoxide—are not produced during photosynthesis and do not play a role in this vital biological process.