Which gas is a byproduct of the light reactions?

Practice Questions

Q1
Which gas is a byproduct of the light reactions?
  1. Carbon dioxide
  2. Nitrogen
  3. Oxygen
  4. Methane

Questions & Step-by-Step Solutions

Which gas is a byproduct of the light reactions?
Correct Answer: Oxygen
  • Step 1: Understand that photosynthesis occurs in two main stages: light reactions and dark reactions.
  • Step 2: Know that light reactions happen in the presence of sunlight.
  • Step 3: Learn that during light reactions, plants use sunlight to convert water and carbon dioxide into energy.
  • Step 4: Recognize that as a result of this process, oxygen is produced.
  • Step 5: Conclude that oxygen is the gas released as a byproduct of the light reactions.
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