Oxygen gas produced during photosynthesis originates as:

a) oxygen atoms contained in water molecules.
b) oxygen atoms from a molecule of chlorophyll that is oxidized by a photon.
c) oxygen atoms released by the metabolism of carbohydrates.
d) oxygen molecules in the atmosphere.
e) oxygen atoms contained in carbon dioxide are released when the carbon is fixed.


Ans: a) oxygen atoms contained in water molecules.

Biology & Microbiology

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