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STD 11 - 11. photosynthesis in higher plants — BIOLOGY STD 11 Science — Question

Rajasthan BoardEnglish MediumSTD 11 ScienceBIOLOGYSTD 11 - 11. photosynthesis in higher plants1 Mark
MCQ
The gas released in photosynthesis is
  • A
    Pure $CO_2$
  • ✓
    Pure $O_2$
  • C
    Mainly $CO_2$
  • D
    Mainly $O_2$
✓

Answer

Correct option: B.
Pure $O_2$
b
(b) Because this $O_2$ is evolved by photolysis of $H_2O$ and $H^+$ ions are oxidised further in $H_2O$ and remaining $O^-$ produces $O_2$.

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