Partially decomposed organic matter called duff is found in ................. horizon of soil profile :-

Options

A. `O_(1)//A_(00)`
B. `O_(2)//A_(0)`
C. `B_(1)`
D. `B_(2)`

Answer

To answer the question about where partially decomposed organic matter called "duff" is found in the soil profile, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding Duff**: Duff is defined as partially decomposed organic matter. It is a layer that consists of organic materials that have not fully decomposed.

2. **Identifying Soil Horizons**: Soil is structured in layers known as horizons. The main horizons include:
- O Horizon (Organic Layer)
- A Horizon (Topsoil)
- E Horizon (Eluviation Layer)
- B Horizon (Subsoil)
- C Horizon (Parent Material)
- R Horizon (Bedrock)

3. **Locating Duff in Soil Horizons**: The O horizon is primarily composed of organic matter, including decomposed and partially decomposed materials. This is where duff is typically found.

4. **Conclusion**: Since duff is partially decomposed organic matter, it is found in the O horizon of the soil profile.

### Final Answer:
Partially decomposed organic matter called duff is found in the O horizon of the soil profile.

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