In which of the following,oxygen does not evo | vedclass

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(D) In oxygenic photosynthesis,water $(H_2O)$ acts as an electron donor,and oxygen $(O_2)$ is released as a byproduct. This occurs in plants,algae,and

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Photosynthetic bacteria

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(D) In oxygenic photosynthesis,water $(H_2O)$ acts as an electron donor,and oxygen $(O_2)$ is released as a byproduct. This occurs in plants,algae,and cyanobacteria (blue-green algae).In contrast,photosynthetic bacteria (such as purple and green sulphur bacteria) perform anoxygenic photosynthesis.In these bacteria,compounds like hydrogen sulphide $(H_2S)$ or other inorganic substances act as electron donors instead of water.Consequently,these bacteria do not evolve oxygen during the process of photosynthesis.

In which of the following,oxygen does not evolve during photosynthesis?

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