Statement A: Photorespiration decreases photosynthetic output Statement B: In photorespiratory pathway, neither ATP nor NADPH is produced.

Question

Statement A: Photorespiration decreases photosynthetic output Statement B: In photorespiratory pathway, neither ATP nor NADPH is produced. (A) Both the statements A and B are correct. (B) Both the statements A and B are wrong. (C) Statement A is correct and statement B is wrong. (D) Statement B is correct and statement A is wrong.

Tardigrade Admin · Accepted Answer

Photorespiration is a cyclic process in which RuBisCO acts as an oxygenase enzyme instead of carboxylase enzyme. Active site of this enzyme is same for both of these activities. In

C_{3}

plants, some

O_{2}

always bind to RuBisCO

Photorespiration does not produce energy or reducing power. Rather, it consumes energy. Further, it undoes the work of photosynthesis. There is

25%

loss of fixed

C O_{2}

Q. Statement A : Photorespiration decreases photosynthetic output Statement B : In photorespiratory pathway, neither ATP nor NADPH is produced.

Both the statements A and B are correct.

Both the statements A and B are wrong.

Statement A is correct and statement B is wrong.

Statement B is correct and statement A is wrong.

Q. Statement A : Photorespiration decreases photosynthetic output
Statement B : In photorespiratory pathway, neither ATP nor NADPH is produced.