The concept of "Omnis cellula-e celula" regarding cell division was first proposed by

Options

A. Rudolf Virchow
B. Theodor Schwann
C. Schleiden
D. Aristotle

Answer

**Step-by-Step Solution:**

1. **Understanding the Concept**: The phrase "Omnis cellula-e cellula" translates to "all cells arise from cells." This concept is crucial in understanding cell division and the continuity of life.

2. **Historical Context**: The idea of cell theory was developed in the 19th century. Initially, in 1839, scientists Theodor Schwann and Matthias Schleiden proposed that all living organisms are composed of cells. Schwann focused on animal cells, while Schleiden focused on plant cells.

3. **Identifying the Gap**: Although Schwann and Schleiden established that cells are the basic unit of life, they did not explain how new cells are formed. This gap in the theory needed to be addressed.

4. **Rudolf Virchow's Contribution**: In 1855, Rudolf Virchow modified the existing cell theory by introducing the statement "Omnis cellula-e cellula." He emphasized that new cells are produced from existing cells, thus providing a clear explanation for cell division.

5. **Conclusion**: Therefore, the concept of "Omnis cellula-e cellula" regarding cell division was first proposed by Rudolf Virchow.

**Final Answer**: Rudolf Virchow

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