NEETBotanyPhotosynthesis in Higher Plants
Identify and name the structure where dark reaction takes place from the labelled structures.
Options
- A(c)-Starch granules
- B(a)-Inner membrane
- C(b)-Stromal lamellae
- D(b)-Stroma
Correct answer
D. (b)-Stroma
Step-by-step solution
The membrane system is responsible for trapping the light energy and also for the synthesis of ATP and NADPH. In stroma, enzymatic reactions synthesise sugar, which in turn forms starch. The former set of reactions, since they are directly light driven, are called light reactions (photochemical reactions). The latter are not directly light driven but are dependent on the products of light reactions (ATP and NADPH). Hence, to distinguish the latter they are called, by convention, as dark reactions (carbon reactions)