InterviewSolution
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InterviewSolution
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Assertion : The concentration of `O_(2)` in atmosphre is inhibitary to photosynthesis. Reason : Oxygen inhibitory effect is due to Warburg effect.A. If both the asserition and the reasion are true and the reason is a correct explanation of the assertionB. If both the assertion and reasoni s not a correct ecplanation of the assertioC. If the assertion is true but the reason is falseD. If both the asseertion and reason are false |
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Answer» Correct Answer - A Small quantity of oxygen is essential for photosynthesis except in some anaerobic bacteria. The inhibition of photosynthesis at high `O_(2)` levels may be due to (i) Oxygen takes part in oxidation of photosynthetic pigments, intermediates and enzymes in the presence of strong light (photo-oxidation), (ii) Oxidation is a strong quencher of excited state of chlorophyll, (iii) it converts RuBP carboxylase to RuBP-oxygen. At a very high decline in all plants. The phenomenon is called Warburg effect (reduction due to photorespiration). |
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