What is respiratory quoient during germination of fatty seeds

Options

A. Unity
B. Less than unity
C. More than unity
D. Zero

Answer

To determine the respiratory quotient (RQ) during the germination of fatty seeds, follow these steps:

### Step-by-Step Solution:

1. **Understand the Concept of Respiratory Quotient (RQ)**:
- The respiratory quotient (RQ) is defined as the ratio of the volume of carbon dioxide (CO2) produced to the volume of oxygen (O2) consumed during respiration.
- Mathematically, RQ = (Volume of CO2 evolved) / (Volume of O2 consumed).

2. **Identify the Substrates Used in Respiration**:
- Different substrates (carbohydrates, fats, proteins, organic acids) yield different RQ values.
- For carbohydrates, the RQ is 1.
- For fats, the RQ is approximately 0.7.
- For proteins, the RQ is around 0.8.
- For organic acids, the RQ is greater than 1.

3. **Focus on Fatty Seeds**:
- The question specifically mentions "fatty seeds," which indicates that the primary substrate for respiration during their germination is fat.

4. **Determine the RQ Value for Fatty Seeds**:
- Since fatty seeds primarily utilize fats for respiration, we refer to the RQ value for fats, which is known to be 0.7.

5. **Conclusion**:
- Therefore, during the germination of fatty seeds, the respiratory quotient (RQ) is less than unity, specifically 0.7.

### Final Answer:
The respiratory quotient during the germination of fatty seeds is **0.7** (less than unity).

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