R.Q. of protein rich pulses/Pisum sativum is

Options

A. Unity
B. Infinity
C. More than unity
D. Less than one

Answer

To determine the R.Q. (Respiratory Quotient) of protein-rich pulses, specifically Pisum sativum, we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Definition of R.Q.**:
The Respiratory Quotient (R.Q.) is defined as the ratio of the volume of carbon dioxide (CO2) produced to the volume of oxygen (O2) consumed during respiration. It is expressed mathematically as:
\[ R.Q. = \frac{\text{CO}_2 \text{ produced}}{\text{O}_2 \text{ consumed}} \]

2. **Identify the Type of Substrate**:
In this case, we are dealing with protein-rich pulses, specifically Pisum sativum (peas). Proteins are macromolecules that are broken down into amino acids during respiration.

3. **Determine the Expected R.Q. for Proteins**:
The R.Q. value varies depending on the type of substrate being metabolized. For carbohydrates, the R.Q. is typically around 1. For fats, it is less than 1, and for proteins, it is generally around 0.9. This indicates that proteins yield less CO2 relative to the amount of O2 consumed.

4. **Conclusion**:
Since the R.Q. for protein-rich substances like Pisum sativum is approximately 0.9, we conclude that it is less than 1.

5. **Select the Correct Option**:
Based on the analysis, the correct answer to the question about the R.Q. of protein-rich pulses (Pisum sativum) is that it is less than 1.

### Final Answer:
The R.Q. of protein-rich pulses/Pisum sativum is **less than 1**.

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