Question

Oxygen libereted during photosynthesis comes from

Answer 1

During photosynthesis, this is what chemically happens:

6CO2 + 6H2O → C6H12O6 + 6O2

Now, if you see closely, there are a total of 18 oxygen atoms in the reaction.

After the reaction, these oxygen atoms from carbon-dioxide and water convert to glucose and even free oxygen molecules.

HOPE YOU UNDERSTOOD!

Answer 2

The oxygen during photosynthesis comes from split water molecules. During photosynthesis, the plant absorbs water and carbon dioxide. After the absorption, the water molecules are disassembled and converted into sugar and oxygen.