NEET2021BotanyPhotosynthesis in Higher PlantsActual
Which of the following statements is incorrect?
Options
- ABoth ATP and NADPH + H + are synthesized during non-cyclic photophosphorylation.
- BStroma lamellae have PS I only and lack NADP reductase.
- CGrana lamellae have both PS I and PS II.
- DCyclic photophosphorylation involves both PS I and PS II.
Correct answer
D. Cyclic photophosphorylation involves both PS I and PS II.
Step-by-step solution
Cyclic photophosphorylation also occurs when only light of wavelengths beyond 680   nm are available for excitation. When only PS I is functional, the electron is circulated within the photosystem I, and the phosphorylation occur due to the cyclic flow of electrons. 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 n