Match List-I with List-II
Choose the correct answer from the options given below:
Show Hint
Associate prefixes with temperature:
- "Megha" is the absolute highest (\(\ge 28^\circ\text{C}\)).
- "Hyper" is very high (\(22^\circ\text{C to } 28^\circ\text{C}\)).
- "Therm" is warm (\(15^\circ\text{C to } 22^\circ\text{C}\)).
- "Mesic" is moderate/mid-range (\(8^\circ\text{C to } 15^\circ\text{C}\)).
This hierarchy makes memorization easy.
Step 1: Understanding the Concept:
Soil temperature is a critical factor influencing plant growth, microbial activity, and chemical reactions within the soil profile.
In Soil Taxonomy, soil temperature regimes are defined based on the mean annual soil temperature (MAST) measured at a depth of 50 cm from the soil surface.
These regimes are used as diagnostic criteria at the family level of soil classification. Step 2: Detailed Explanation:
The standardized limits for soil temperature regimes are defined as follows:
- Meghathermic: This represents extremely warm soil conditions.
The mean annual soil temperature is \(28^\circ\text{C}\) or more. Thus, (A) matches (III).
- Hyperthermic: This represents very warm soil conditions.
The mean annual soil temperature ranges from \(22^\circ\text{C}\) to less than \(28^\circ\text{C}\) (\(22^\circ\text{C to } < 28^\circ\text{C}\)). Thus, (B) matches (IV).
- Thermic: This represents warm temperate soil conditions.
The mean annual soil temperature ranges from \(15^\circ\text{C}\) to less than \(22^\circ\text{C}\) (\(15^\circ\text{C to } < 22^\circ\text{C}\)). Thus, (C) matches (II).
- Mesic: This represents temperate soil conditions.
The mean annual soil temperature ranges from \(8^\circ\text{C}\) to less than \(15^\circ\text{C}\) (\(8^\circ\text{C to } < 15^\circ\text{C}\)). Thus, (D) matches (I).
Combining these matches: (A) - (III), (B) - (IV), (C) - (II), (D) - (I).
This corresponds to Option (C). Step 3: Final Answer:
The correct matching sequence is (A) - (III), (B) - (IV), (C) - (II), (D) - (I).
