NEET Biology Photosynthesis In Higher Plants Based Practice Questions & Answers with Viewers Discussion and Detailed Explanation

Photosynthesis In Higher Plants Topic Based

Question & Answer Discuss:

The first acceptor of electrons from an excited chlorophyll molecule of photosystem II is

(a) iron-sulphur protein

(b) quinone

(c) ferredoxin

(d) cytochrome.

Answer: (b)

Type I photosystems use ferredoxin like iron-sulphur cluster proteins as terminal electron acceptors, while type II photosystems ultimately shuttle electrons to a quinone terminal electron acceptor. One has to note that both reaction centres types are present in chloroplasts of plants and cyanobacteria, working together to form an unique photosynthetic chain able to extract electrons from water, evolving oxygen as a byproduct.

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