NEETBotanyPhotosynthesis in Higher Plants
Identify and name the structure where light reaction takes place from the labelled structures.
Options
- A(a)Stromal lamella
- B(b)Lipid droplet
- C(c)Outer membrane
- D(d)Starch granule
Correct answer
A. (a)Stromal lamella
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)