Class 11 NEET Biology Photosynthesis in Higher Plants

(a) : In photosystem-I, the ejected electron is trapped by FRS (ferrodoxin reducing substance) which is an unknown oxidation - reduction system. The electron is now transferred to a non-heme iron protein called ferrodoxin (Fd) from which electron is transferred to NADP ‌+ intermediate protein electron carrier ferrodoxin-NADP reductase. So that NADP ‌+ is reduced to NADPH+H+