What was produced by photosynthesis before the cyanobacterial lineage developed on Earth?
A) oxygen
B) elemental sulfur
C) ferrous iron
D) hydrogen sulfide

Name: What was produced by photosynthesis before the cyanobacterial lineage developed on Earth? A) oxygen B) elemental sulfur C) ferrous iron D) hydrogen sulfide
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Question

Quizplus · Accepted Answer

Before the cyanobacterial lineage developed, anoxygenic photosynthesis was performed by other bacteria, which produced elemental sulfur as a byproduct instead of oxygen.

What Was Produced by Photosynthesis Before the Cyanobacterial Lineage Developed