The simplest oxygen-producing organisms are:
Correct answer: C. Cyanobacteria
- A. Photosynthetic bacteria
- B. Autotrophic bacteria
- C. Cyanobacteria
- D. Chlamydomenas
Explanation
Cyanobacteria, also known as blue-green algae, are the simplest oxygen-producing organisms. They are a group of photosynthetic bacteria that are capable of carrying out oxygenic photosynthesis.
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