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choli [55]
3 years ago
12

Cyanobacteria were the first photosynthetic organisms. How were they responsible for allowing higher life forms to evolve? A. Th

ey released oxygen, which mixed to form iron, and later ferrous oxide, in the air. B. They released carbon dioxide, which evolving animals needed. C. They released oxygen, which created the ozone layer, resulting in reduced mutation rate.
Biology
2 answers:
mariarad [96]3 years ago
5 0

Correct answer: C). They released oxygen, which created the ozone layer, resulting in reduced mutation rate.

Cyanobacteria are bacteria that are known to get their energy by the process of photosynthesis and they are the only photosynthetic prokaryotes that are able to produce oxygen.

They also play a very important role in shaping the course of evolution. The oxygen atmosphere on which we depend today was first generated by the cyanobacteria during Archaean and Proterozoic eras.

Hence, the correct answer would be option C.

Mumz [18]3 years ago
4 0
I think the correct answer from the choices listed above is option C. Cyanobacteria is responsible for allowing higher life forms to evolve by releasing oxygen, which created the ozone layer, resulting in reduced mutation rate.<span />
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