Q. In photosynthesis, light independent reactions takes place at :
(a) Photosystem I
(b) Photosystem II
(c) Stromal matrix
(d) Thylakoid lumen
Solution :
Correct option : C In photosynthesis, light independent reactions are known as dark reactions. They take place in the stromal matrix of chloroplast where all the enzymes required for the reaction are present. This process does not depend directly on the presence of light but is dependent on the products of light reaction i.e., ATP and NADPH. The dark reaction occur through Calvin cycle.