Question

Bacterial photosynthesis is characterised by

• A. Evolution of $O_2$
• B. Evolution of $H_2$
• C. Evolution of $C{O}_2$
• D. Non-evolution of $O_2$

Answer 1

The correct option is D Non-evolution of $O_2$

Blue Green algae, Green algae, and autotrophic plants are photosynthetic organisms. They carry out photosynthesis using sunlight, water, and carbon dioxide and produce carbohydrates and oxygen. Photosynthetic bacteria like purple bacteria or green sulfur bacteria carry out anoxygenic bacterial photosynthesis. However, they reduce hydrogen sulfide instead of water and elemental sulfur is evolved instead of oxygen.

Thus, t the correct answer is 'Non-evolution of O${}_2$.'