Class 11 · Photosynthesis in Higher Plants

Oxygen Source in Photosynthesis — NEET Biology

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The O₂ released is from water; this was proved using radio isotope techniques. Note that this is not a single

NCERT Biology · Class 11 · Chapter 11 · Paragraph 19
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Assertion (A): Van Niel proposed that O₂ is released from water in photosynthesis. Reason (R): H₂O splits during the light reaction to release O₂.

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