Question

Statement A: Variation in environment and landscape leads to soil evaluation rather than soil development.
Statement B: Intermediate topography affords the best condition for the formation of an agriculture-productive soil.
Choose the correct answer from the options given below:

• A. Both statements A and B are true.
• B. Statement A is true but B is false.
• C. Both statements A and B are false.
• D. Statement A is false but B is true.

Hint:

"Catena" is a term used to describe a sequence of soils of about the same age, derived from similar parent material, and occurring under similar climatic conditions, but having different characteristics due to variation in relief and drainage.

Answer 1

The Correct Option is D

Step 1: Understanding the Concept:
Soil formation (pedogenesis) is controlled by active and passive factors: climate, organisms, relief (topography), parent material, and time.

Step 2: Detailed Explanation:
- Statement A Analysis: Variation in environment and landscape naturally drives soil development and pedogenesis, not merely soil evaluation (which is a human assessment of soil suitability). Therefore, Statement A is conceptually incorrect.
- Statement B Analysis: Topography significantly influences soil moisture and erosion. On steep slopes, rapid runoff causes high erosion, leading to shallow, poorly developed soils. In low-lying depressions, water pools, causing poor drainage and gleying. Intermediate (gentle to moderate) topography provides optimal water infiltration and drainage with minimal erosion, facilitating the formation of deep, fertile, and agriculturally productive soils. Thus, Statement B is correct.

Step 3: Final Answer:
Statement A is false, but Statement B is true.