What is the contribution of Boussingault in the study of photosynthesis ?

Options

A. Light is essential for photosynthesis
B. Amount of `CO_(2)` absorbed is equal to `O_(2)` evolved
C. `CO_(2)` is raw material for photosynthesis
D. Oxygen is bye-product of photosynthesis.

Answer

**Step-by-Step Solution:**

1. **Identify Boussingault's Background:**
- Boussingault was a French chemist known for his contributions to various fields, including agriculture and plant physiology.

2. **Understand His Contribution to Photosynthesis:**
- He made significant contributions to the understanding of photosynthesis, particularly through his research on the photosynthetic quotient.

3. **Define Photosynthetic Quotient:**
- The photosynthetic quotient is defined as the ratio of the amount of carbon dioxide absorbed by a plant to the amount of oxygen evolved during photosynthesis.

4. **Significance of the Photosynthetic Quotient:**
- This quotient is crucial for measuring the efficiency of photosynthesis in plants. It helps in understanding how effectively plants convert carbon dioxide into oxygen.

5. **Conclusion:**
- Boussingault's key contribution to the study of photosynthesis is the establishment of the relationship that the amount of carbon dioxide absorbed is equal to the amount of oxygen evolved, which is reflected in the photosynthetic quotient.

**Final Answer:**
Boussingault's contribution to the study of photosynthesis is the establishment of the photosynthetic quotient, which states that the amount of carbon dioxide absorbed is equal to the amount of oxygen evolved during the process of photosynthesis.

---