Theory of biogenesis was supposed by

Options

A. Epicurus
B. Von Helmont
C. Aristotle
D. L.Pasteur

Answer

**Step-by-Step Solution:**

1. **Understanding the Question**: The question asks about who proposed the Theory of Biogenesis. We need to identify the correct scientist from the given options: Epicurus, Van Helmont, Aristotle, or Louis Pasteur.

2. **Reviewing the Theories of Origin of Life**:
- **Spontaneous Generation**: This theory suggested that life could arise from non-living matter. Many scientists in the 17th century supported this idea.
- **Biogenesis**: This theory posits that life arises from pre-existing life, not from non-living materials.

3. **Identifying Key Figures**:
- **Epicurus**: He is associated with the theory of spatial creation, which is not related to biogenesis.
- **Van Helmont**: He believed in spontaneous generation, which contradicts biogenesis.
- **Aristotle**: He also supported the idea of abiogenesis (spontaneous generation).
- **Louis Pasteur**: He conducted the famous swan neck flask experiment, which demonstrated that life does not arise from non-living matter but from existing life forms.

4. **Conclusion**: Based on the information reviewed, Louis Pasteur is the scientist who proposed the Theory of Biogenesis. His experiments provided evidence against spontaneous generation and supported the idea that life comes from pre-existing life.

5. **Final Answer**: The Theory of Biogenesis was proposed by Louis Pasteur.

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