The Van Niel hypothesis about the production of oxygen during photosynthesis was based on the study and investigations on _.

Correct answer: A. Bacteria

  • A. Bacteria
  • B. Algae
  • C. Protonema
  • D. Cyanobacteria

Explanation

This option is correct. The answer is bacteria. The Van Niel hypothesis was based on the study and investigations on bacteria. In his experiments, Van Niel used purple sulfur bacteria, which are a type of bacteria that can perform photosynthesis. He found that these bacteria produced oxygen when they were supplied with water, but not when they were supplied with carbon dioxide. This led him to conclude that the oxygen produced during photosynthesis by bacteria comes from water, not from carbon dioxide.

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