Practice questions on the light-dependent reactions of photosynthesis, covering photosystems I and II, electron transport chains, and ATP synthesis through photophosphorylation.
The Z scheme represents the movement of electrons from water to NADP⁺ through Photosystem II and Photosystem I.
Ref: NCERT Class 11 Biology Chapter 11: Photosynthesis in Higher Plants Light Reaction - Photosystems Electron Transport Photophosphorylation
The Z-scheme describes the linear flow of electrons from water to NADP+ through Photosystem II and I.
Ref: NCERT Class 11 Biology Chapter 11: Photosynthesis in Higher Plants Light Reaction - Photosystems Electron Transport Photophosphorylation
Water acts as the primary electron donor in PSII, undergoing photolysis to release electrons.
Ref: NCERT Class 11 Biology Chapter 11: Photosynthesis in Higher Plants Light Reaction - Photosystems Electron Transport Photophosphorylation
In cyclic photophosphorylation, oxygen is not released because water is not split.
Ref: NCERT Class 11 Biology Chapter 11: Photosynthesis in Higher Plants Light Reaction - Photosystems Electron Transport Photophosphorylation
Oxygen is evolved in Photosystem II, not Photosystem I.
Ref: NCERT Class 11 Biology Chapter 11: Photosynthesis in Higher Plants Light Reaction - Photosystems Electron Transport Photophosphorylation
NADPH, produced in the light reactions, provides reducing power for CO₂ fixation in the Calvin cycle.
Ref: NCERT Class 11 Biology Chapter 11: Photosynthesis in Higher Plants Light Reaction - Photosystems Electron Transport Photophosphorylation
Photosystem I helps in reducing NADP+ to NADPH during the light reactions.
Ref: NCERT Class 11 Biology Chapter 11: Photosynthesis in Higher Plants Light Reaction - Photosystems Electron Transport Photophosphorylation
Light energy drives photolysis of water in the light-dependent reaction, releasing oxygen and electrons.
Ref: NCERT Class 11 Biology Chapter 11: Photosynthesis in Higher Plants Light Reaction - Photosystems Electron Transport Photophosphorylation
The Z-scheme describes the linear flow of electrons from water to NADP+ via Photosystem II and Photosystem I.
Ref: NCERT Class 11 Biology Chapter 11: Photosynthesis in Higher Plants Light Reaction - Photosystems Electron Transport Photophosphorylation
Plastocyanin transfers electrons from the cytochrome b6f complex to PSI in the light-dependent reactions of photosynthesis.
Ref: NCERT Class 11 Biology Chapter 11: Photosynthesis in Higher Plants Light Reaction - Photosystems Electron Transport Photophosphorylation
In cyclic photophosphorylation, electrons cycle back to Photosystem I, producing ATP but no NADPH or oxygen.
Ref: NCERT Class 11 Biology Chapter 11: Photosynthesis in Higher Plants Light Reaction - Photosystems Electron Transport Photophosphorylation
NADP+ accepts electrons and hydrogen to form NADPH, used in the Calvin cycle.
Ref: NCERT Class 11 Biology Chapter 11: Photosynthesis in Higher Plants Light Reaction - Photosystems Electron Transport Photophosphorylation
