NEET 2018 Biology question

Oxygen is not produced during photosynthesis by

(1)Cycas
(2)Nostoc
(3)Green sulphur bacteriaCorrect
(4)Chara

Answer: (3)

Solution

Oxygenic photosynthesis needs water as the source of electrons and protons, and releases . Cycas (gymnosperm), Chara (green alga) and Nostoc (cyanobacterium) all have photosystem II and split water, so

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Question ID VK-092285