Who found that organic matter is synthesised with the help of solar energy

Options

A. Hill
B. Van Steil
C. Mayer
D. Bayer.

Answer

**Step-by-Step Solution:**

1. **Identify the Key Figure**: The question asks who discovered that organic matter is synthesized with the help of solar energy. The key figure associated with this discovery is Mayer.

2. **Historical Context**: In 1845, Mayer published a significant hypothesis regarding the relationship between solar energy and the synthesis of organic matter in plants.

3. **Mayer's Contribution**: In his book titled "Organic Motion in its Relation to Metabolism," Mayer proposed that plants utilize solar energy (light energy) to synthesize organic matter.

4. **Energy Transformation**: Mayer described the process of energy transformation in plants. He referred to light energy as one form of "power" and the chemical energy produced during photosynthesis as another form of "power."

5. **Understanding Chemical Energy**: The chemical energy mentioned by Mayer refers to the energy stored in organic compounds, which is produced through the process of photosynthesis.

6. **Conclusion**: Therefore, the correct answer to the question is that Mayer found that organic matter is synthesized with the help of solar energy.

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