In the Z-scheme of photosynthesis, electrons flow:
AFrom PSI to water (downhill)
BFrom NADPH to PSII
CJust within PSI only
DFrom water → PSII → PSI → NADPH
Answer & Solution
Correct answer: D. From water → PSII → PSI → NADPH
NON-CYCLIC e⁻ flow (Z-scheme): water
→ PSII (P680) → ETC → PSI (P700) → NADPH.
Generates ATP + NADPH + O2. CYCLIC flow uses only PSI, generates ATP only.
Keep practising Photosynthesis in Higher Plants
Browse all Photosynthesis in Higher Plants questions for AP Intermediate 1st Year, or explore more Biology topics.
Related questions
NEET · Biology · Photosynthesis ↔ RespirationNEET · Biology · Photosynthesis — Path of ElectronsNEET · Biology · Light or Dark ReactionNEET · Bio · Photosynthesis · Calvin — Memory MatchNEET · Bio · Photosynthesis · Two Light Reaction PathwaysNEET · Bio · Photosynthesis · Photosynthesis Term — TypingNEET · Bio · Photosynthesis · ATP per CO₂ FixedNEET · Bio · Photosynthesis · Tap Pigments