Question

Match List-I with List-II 
\[\begin{array}{|l|l|} \hline \text{List-I (Soil component)} & \text{List-II (Definition)} \\ \hline (A)~\text{Azonal soils} & (I)~\text{An individual natural aggregate of soil particles.} \\ (B)~\text{Regoliths} & (II)~\text{Organisms living in the soil or ground} \\ (C)~\text{Ped} & (III)~\text{Soils have uniformity from the top-surface to the base, and do not have well-developed soil horizons.} \\ (D)~\text{Edaphons} & (IV)~\text{Zone of loose and unconsolidated weathered rock materials.} \\ \hline \end{array}\]

Choose the correct answer from the options given below: 
 

• (A) - (I), (B) - (II), (C) - (III), (D) - (IV)
• (A) - (IV), (B) - (I), (C) - (II), (D) - (III)
• (A) - (IV), (B) - (III), (C) - (II), (D) - (I)
• (A) - (III), (B) - (IV), (C) - (I), (D) - (II)

Hint:

Break down the terms: 'A-zonal' means 'without zones' or horizons. 'Rego-' relates to rock/blanket. 'Ped' is a soil unit. '-Edaphon' relates to soil life. Understanding these root meanings can help you deduce the correct definitions.

Answer 1

The Correct Option is D

Step 1: Understanding the Concept:
This question requires matching specific terms from soil science (pedology) with their correct definitions.

Step 3: Detailed Explanation:
\[\begin{array}{rl} \bullet & \text{(A) Azonal soils: These are immature soils that lack well-developed horizons. They are often found on steep slopes or in recent alluvial deposits. This matches the definition: "Soils have uniformity from the top-surface to the base, and do not have well-developed soil horizons." So, (A) matches (III).} \\ \bullet & \text{(B) Regoliths: This is the layer of loose, heterogeneous superficial material covering solid rock. It includes dust, soil, broken rock, and other related materials. This matches the definition: "Zone of loose and unconsolidated weathered rock materials." So, (B) matches (IV).} \\ \bullet & \text{(C) Ped: This is a unit of soil structure, which is a natural aggregate of soil particles (sand, silt, and clay) held together. This matches the definition: "An individual natural aggregate of soil particles." So, (C) matches (I).} \\ \bullet & \text{(D) Edaphons: This is a collective term for all the organisms that live in the soil, including bacteria, fungi, protozoa, and larger animals. This matches the definition: "Organisms living in the soil or ground". So, (D) matches (II).} \\ \end{array}\] The correct set of matches is A-III, B-IV, C-I, D-II.

Step 4: Final Answer:
The correct matching option is (A) - (III), (B) - (IV), (C) - (I), (D) - (II).