Answer this question.
20. Photorespiration is favoured by
(a) Low light and high O 2
(b) Low O 2 and high C O 2
(c) Low temperature and high O 2
(d) High O 2 and low C O 2

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​Please find below the solution to the asked query    

Photorespiration is favoured when CO2 levels inside the leaf becomes low. O2 level is high as compared to CO2 level. Hence, option (d) is correct.

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