Home / Question Bank / Biology / Photosynthesis in Higher Plants / Question 4 NEET Biology Class 11 Light reaction — photosystems Medium Single correct
Photosystem I and Photosystem II each have a reaction-centre chlorophyll a molecule, named after the wavelength at which it shows its absorption peak. Which of the following correctly pairs each photosystem with its reaction-centre pigment and identifies the photosystem associated with the splitting of water into O₂, H⁺ and electrons? (A) PSI has reaction centre P680, PSII has reaction centre P700, and water is split at PSI (B) PSI has reaction centre P700, PSII has reaction centre P680, and water is split at PSII (C) PSI has reaction centre P700, PSII has reaction centre P680, and water is split at PSI (D) Both PSI and PSII have the same reaction centre, P680, and water is split where PSI and PSII physically overlap Show answer and explanation ← Question 3 All Photosynthesis in Higher Plants questions Question 5 → More NEET Biology chapters © 2026 Lumi (Aikolumi Software Pvt Ltd). Original questions written by Lumi. Free to view and practise on this site. Copying, republishing or reproducing these questions, options or solutions, in print or online, is not permitted.
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