Which Came First, Cyclic Photosynthesis Or Non Cyclic Photosynthesis?


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Itamar Pozzobom Profile
Itamar Pozzobom answered
I am sure that it was Non cyclic photosynthesis.
Anonymous Profile
Anonymous answered
Actually it was cyclic photosynthesis. Cyclic photosynthesis does not use oxygen which was key to the organisms at the beginning of time since there was not much oxygen in the atmosphere. Non-cylic photosynthesis came about 2.7 billion years ago when it evolved in the cyanobacteria.

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