NEETBotanyPhotosynthesis in Higher Plants
Select the correct statement regarding the diagram given below.
Options
- APhoto-phosphorylation is the synthesis of ATP from ADP and inorganic phosphate in the absence of light.
- BWhen only PS I is functional, the electron is circulated within the photosystem and the phosphorylation occurs
- CWhile the membrane or lamellae of the grana have both PS I and PS II the stroma lamellae membranes lack PS II
- DThe excited electron does not pass on to NADP+ but is cycled back to the PS I complex through the electron tra
Correct answer
D. The excited electron does not pass on to NADP+ but is cycled back to the PS I complex through the electron tra
Step-by-step solution
Photo-phosphorylation is the synthesis of ATP from ADP and inorganic phosphate in the presence of light. When only PS I is functional, the electron is circulated within the photosystem and the phosphorylation occurs due to cyclic flow of electrons (Figure 11.6). A possible location where this could be happening is in the stroma lamellae. While the membrane or lamellae of the grana have both PS I and PS II the stroma lamellae membranes lack PS II as well as NADP reductase enzyme. The excited electron does not pass o