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Assertion (A): Photorespiration reduces the yield of C₃ plants.
Reason (R): Oxygenation of RuBP releases fixed carbon as CO₂ without forming sugar.

(a) Both A and R are true, and R is the correct explanation of A. Correct
(b) Both A and R are true, but R is not the correct explanation of A. Your answer
(c) A is true but R is false. Your answer
(d) Both A and R are false. Your answer

Your answer: Correct answer: (a)

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Explanation

Why (a) is correct

Both are true and R explains A. In photorespiration, fixed carbon is released as CO₂ without forming sugar, so C₃ plants lose yield.

Why the other options are wrong

(b) · your answer R is the reason for A.
(c) · your answer R is true.
(d) · your answer Both are true.

NCERT point: C₄ plants avoid this loss.

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