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Pheo or phaeophytin is involved in the transport of electrons to Quinone and protons to lumen of thylakoids during non-cyclic electron transport

During non – cyclic electron transport of oxygenic photosynthetic organisms electrons are ejected from P680, P700 and Water.

Cytochrome b6/f complex of thylakoid membrane is involved in down hill transport of both electrons and protons.

Plastocyanin is involved in only non-cyclic electron transport of photosynthesis but not in cyclic electron transport

answer is B.

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Detailed Solution

During non-cyclic electron transport electrons are initially ejected from P680 and P700 and ultimately the electron deficiency is compensated by ultimately getting electrons from water due to photolysis. Pheo or pheophytin is involved in only electron transport but not proton transport. Cytochrome b6/f complex is involved in down hill transport of electrons and uphill transport of protons. Plastocyanin is involved in both cyclic and non-cyclic electron transport.

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