Which gas is released as a byproduct during photosynthesis?

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Multiple Choice

Which gas is released as a byproduct during photosynthesis?

Explanation:
During photosynthesis, light energy drives the splitting of water in the light-dependent reactions. This photolysis releases oxygen gas as a byproduct, while the resulting electrons and protons help form ATP and NADPH that power carbon fixation. The overall process uses carbon dioxide to build sugars, so CO2 isn’t released. Water serves as the electron source and is consumed, not produced as a gas, and nitrogen isn’t part of the photosynthetic byproducts. So the gas released by the process is oxygen.

During photosynthesis, light energy drives the splitting of water in the light-dependent reactions. This photolysis releases oxygen gas as a byproduct, while the resulting electrons and protons help form ATP and NADPH that power carbon fixation. The overall process uses carbon dioxide to build sugars, so CO2 isn’t released. Water serves as the electron source and is consumed, not produced as a gas, and nitrogen isn’t part of the photosynthetic byproducts. So the gas released by the process is oxygen.

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