The rate of decomposition of detritus is accelerated

Options

A. If the detritus contains lignin chitin, tannins and cellulose.
B. If the detritus is present in acidic soil
C. If the moisture and aeration are at optimum
D. If the temperature is below `10^@C`

Answer

To solve the question regarding the factors that accelerate the rate of decomposition of detritus, we will analyze each option provided.

### Step-by-Step Solution:

1. **Understanding Decomposition**: Decomposition is the process by which organic substances are broken down into simpler organic or inorganic matter. It is crucial for nutrient cycling in ecosystems.

2. **Analyzing Option 1**:
- **If the detritus contains lignin, chitin, tannins, and cellulose**:
- Lignin and chitin are complex compounds that are resistant to decomposition.
- High levels of lignin and chitin slow down the decomposition process.
- Therefore, this option is **incorrect**.

3. **Analyzing Option 2**:
- **If the detritus is present in acidic soil**:
- Acidic conditions can inhibit the growth of bacteria and fungi, which are essential for decomposition.
- Lower bacterial populations lead to a decreased rate of decomposition.
- Thus, this option is also **incorrect**.

4. **Analyzing Option 3**:
- **If the moisture and aeration are at optimum**:
- Adequate moisture is essential for microbial activity, and oxygen is necessary for aerobic decomposition.
- When both moisture and aeration are optimal, the rate of decomposition increases significantly.
- Therefore, this option is **correct**.

5. **Analyzing Option 4**:
- **If the temperature is below 10 degrees Celsius**:
- Decomposition generally requires a warmer temperature to facilitate microbial activity.
- Low temperatures slow down metabolic processes in decomposers, leading to a decreased rate of decomposition.
- Hence, this option is **incorrect**.

### Conclusion:
The correct answer is that the rate of decomposition of detritus is accelerated **if the moisture and aeration are at optimum**.

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