A milestone contribution to the understanding of photosythesis was made by Cornellus van Niel, which was based on the studies of

Options

A. Bacteria
B. Alga
C. Angiospermic
D. Lower plant

Answer

**Step-by-Step Text Solution:**

1. **Understanding Photosynthesis**: Photosynthesis is the process by which plants, algae, and some bacteria convert light energy into chemical energy in the form of glucose. This process also releases oxygen as a byproduct.

2. **Cornelius Van Niel's Contribution**: Cornelius Van Niel made significant contributions to the understanding of photosynthesis. His research focused on the role of bacteria in the process of photosynthesis.

3. **Focus on Bacteria**: Van Niel's studies specifically examined certain types of bacteria that are capable of photosynthesis. He proposed that the fundamental process of photosynthesis could be understood through the study of these bacteria.

4. **Key Findings**: He concluded that in photosynthesis, the source of oxygen produced is not from carbon dioxide, but rather from water. This was a pivotal shift in understanding the photosynthetic process.

5. **Conclusion**: Therefore, the milestone contribution made by Cornelius Van Niel was based on his studies of bacteria, which helped clarify the mechanisms of photosynthesis.

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