Question

Process of intermixing of soil horizons by external factor is called

• A. Argillation
• B. Horizontalization
• C. Gleization
• D. Pedoturbation

Hint:

Soil processes:
- Pedoturbation: Intermixing of soil horizons.
- Argillation: Clay translocation.
- Gleization: Waterlogged conditions.

Answer 1

The Correct Option is D

Step 1: Understanding the Question:
This question tests knowledge of soil formation processes.

Step 2: Detailed Explanation:
Pedoturbation (D) is the process of intermixing of soil horizons by external factors.
These factors include:
- Bioturbation (animals, roots).
- Cryoturbation (freeze-thaw).
- Argillation (clay movement).
Other processes:
- Argillation (A): Movement of clay particles.
- Horizontalization (B): Not a standard term.
- Gleization (C): Formation of gley horizons (waterlogged conditions).
Thus, pedoturbation is the intermixing of soil horizons.

Step 3: Final Answer:
Thus, pedoturbation is the process of intermixing of soil horizons, which corresponds to option (D).
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