Question

the ___ are the main photosynthesizes and are responsible for producing a large quantity of our oxygen.
○ a. escicherichia coli
○ b. vibrio fisheri
○ c. cyanobactreia
○ d. chamydia trachomati

Explanation:

• Escherichia coli is a common gut bacterium, not a major photosynthesizer.
• Vibrio fisheri is known for bioluminescence, not oxygen - producing photosynthesis.
• Chlamydia trachomatis is an intracellular parasite, not involved in photosynthesis.
• Cyanobacteria are photosynthetic organisms. They are among the main photosynthesizers on Earth and produce a large amount of oxygen through photosynthesis.

Answer:

C. Cyanobacteria