• anonymous
When did photosynthesis evolved?
  • Stacey Warren - Expert
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  • schrodinger
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  • anonymous
There is strong evidence that photosynthetic organisms appeared around 3.2-3.5 billion years ago. However, there are other theories, and all are currently controversial. No one really knows.
  • Frostbite
Agree with PlantMan, but we have a strong idea where to look, it is believed that ancestors to the photosynthetic filamentous cyanobacterium Anabaena might just lead back to the original chloroplast.

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