Question

multiple choice question
what happens to the oxygen produced when water molecules are split during photosynthesis?
it is released into the atmosphere.
it is combined with light energy.
it is stored in plant pigments.
it is used to make sugars.

Explanation:

During photosynthesis, when water molecules are split, the oxygen is a by - product and is released into the atmosphere. Light energy is used to drive the process, not combined with oxygen. Plant pigments absorb light energy, not store oxygen. Hydrogen from water splitting is used in making sugars, not oxygen.

Answer:

It is released into the atmosphere.