In photosynthesis, the lightindependent reactions take place at

A photosystem \( II\)
B stromal matrix
C thylakoid lumen
D photosystem \(I\).

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Answer & Solution

Correct Answer

(B) stromal matrix

Step-by-step Solution

Detailed explanation

(b) : The lightindependent reactions (dark or Blackman’s reactions) of photosynthesis take place in stroma or matrix of chloroplasts. These reactions are enzymatic reactions which catalyse assimilation of \(CO_2\) into carbohydrates.

Apply the relevant identity from the chapter and substitute the values established in the previous step, keeping the original constraint in view.

Use the simplified expression to isolate the unknown, then plug the result back into the question setup to confirm the working is internally consistent.

Cross-check against a boundary or limiting case. Both the dimensional balance and the qualitative behaviour at the extreme should agree with the candidate answer.

Combine the steps above to identify the correct option. The remaining choices each fail at least one of the consistency, dimensional, or boundary checks.

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In photosynthesis, the light­independent reactions take place at

Step-by-step Solution

In photosynthesis, the lightindependent reactions take place at