Question

• Which of the following is the sites of CO2 reduction and photophosphorylation
in photosynthesis?

Answer
A. Grana and stroma resp.
B. Vacuole
C. Stroma & grana resp.
D. mitochondria​

Answer 1

$\huge\bf{Answer:-}$

(A) :- Grana and stroma respiration

$\huge\bf{Reason:-}$

• A) Enzymes require for carbon fixation are present inside the mesophyll cells.
• B) NADPH is synthesised during non-cyclic photophosphorylation which involves both PS I and PS II.
• C) The electron carriers (cytochromes b and f) are present on the thylakoid membrane.
• D) Carbon dioxide is fixed and reduced and water is oxidised into a proton and oxygen during photosynthesis.
• So the correct answer is 'Enzymes required for carbon fixation are located in grana of chloroplasts.

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