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06/09/2020 8:30 pm
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Which one of the following categories of organisms do not evolve oxygen during photosynthesis?
(a) Red algae
(b) Photosynthetic bacteria
(c) C4 plants with Kranz anatomy
(d) Blue green algae
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06/09/2020 8:35 pm
(b) Photosynthetic bacteria
Explanation:
Photosynthetic bacteria do not use H2O as electron donor but some other compound like Fe2+, H2S.
In photosynthesis, splitting of water and liberation of O2 by chlorophyll in presence of light and hydrogen acceptor is called photolysis of water.
H2O ⇌ 2H+ + 2e- + 1/2O2
[Photolysis of water]