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Uses of Oxygen

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Question

Answer the following in "Yes" or "No".

Oxygen given out in photosynthesis comes from the atmosphere.
Yes
No

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Solution

The correct answer is- No.

Oxygen given out in photosynthesis comes from water absorbed from the soil and not from the atmosphere.

The light energy is used in splitting the water molecule (H2O) into its two components (Hydrogen and Oxygen) and releasing electrons.

Energy of 4 photons
2H2O ----------------------->4H+ + 4e- + O2

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