Which gas is released as a byproduct of photosynthesis?

Which gas is released as a byproduct of photosynthesis?

• A. Oxygen
• B. Carbon dioxide
• C. Nitrogen
• D. Methane

Answer: (A)

During photosynthesis, plants use light energy to convert carbon dioxide and water into glucose, and oxygen is released as a byproduct. In the light-dependent reactions, water is split to provide electrons, and this process produces molecular oxygen that exits the leaf through the stomata. The overall equation shows oxygen as one of the outputs while carbon dioxide is taken in to build sugars, not released. Nitrogen and methane aren’t produced by photosynthesis, so they aren’t the byproduct.

During photosynthesis, plants use light energy to convert carbon dioxide and water into glucose, and oxygen is released as a byproduct. In the light-dependent reactions, water is split to provide electrons, and this process produces molecular oxygen that exits the leaf through the stomata. The overall equation shows oxygen as one of the outputs while carbon dioxide is taken in to build sugars, not released. Nitrogen and methane aren’t produced by photosynthesis, so they aren’t the byproduct.