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Choose the features of Photorespiration.
A. It decreases the photosynthetic fixation of CO₂
B. In the first reaction of this process Phosphoglycolic acid and Phosphoglyceric acid are formed
C. Phosphoglyceric acid is not only formed in the first reaction of this pathway but also PGA takes part in subsequent reactions of this pathway for the liberation of CO_2.
D. It utilises the ATP formed in Chloroplast

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Only A, B and C.

Only A and B

Only A, B and D

A, B, C and D

answer is C.

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Detailed Solution

A. It decreases the photosynthetic fixation of CO₂ because the fixed carbon is lost as CO₂ and it prevents the carboxylation activity.

B. In the first reaction of this process a 2C Phosphoglycolic acid and a 3C Phosphoglyceric acid are formed

C. Phosphoglyceric acid formed in the first reaction of this pathway does not take part in subsequent reactions of this pathway for the liberation of CO_2. The carbon is lost from glycolic acid after it is converted to amino acid Glycine.

D. It utilises the ATP formed in Chloroplast for the formation of phosphoglyceric acid from glyceric acid.

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