Question

Cyanobacteria is said to be the first organism on Earth. What is the BEST explanation for its importance to scientists?

It is believed to have pumped enough oxygen in Earth's atmosphere to create eukaryotic cells.


It is eukaryotic.

It is believed to have pumped enough carbon dioxide in Earth's atmosphere to create eukaryotic cells.

It is prokaryotic.

Answer 1

The correct answer is A. It is believed to have pumped enough oxygen in earth's atmosphere to create eukaryotic cells.

Cyanobacteria can also be referred to as cyanophyta.

Now that they are phylum of bacteria they are well known to get their energy in the process of photosynthesis.

Cyanobacteria are only prokaryotes which are synthetic and they are capable of producing oxygen.