Question

Match LIST I with LIST II
\[ \begin{array}{|l|l|} \hline \textbf{LIST I} & \textbf{LIST II} \\ \hline A. \ \text{Soil water not available to plant} & I. \ \text{Rhizosphere} \\ B. \ \text{Soil column occupied by root zone} & II. \ \text{Hygroscopic water} \\ C. \ \text{Vertical entry of water into soil} & III. \ \text{Infiltration} \\ D. \ \text{Tensiometer} & IV. \ \text{Soil moisture measurement} \\ \hline \end{array} \]
Choose the correct answer from the options given below:

• A. A-I, B-III, C-II, D-IV
• B. A-II, B-I, C-IV, D-III
• C. A-III, B-I, C-II, D-IV
• D. A-II, B-I, C-III, D-IV

Hint:

Key soil-water vocabulary: - Infiltration: Water entering soil. - Hygroscopic: Unavailable water. - Tensiometer: Measures soil water tension. - Rhizosphere: Root zone.

Answer 1

The Correct Option is D

Step 1: Match each soil-water term in LIST I with its correct definition in LIST II.
- A. Soil water unavailable to plants: Water bound tightly to soil particles, beyond plant root extraction capabilities. This defines II. Hygroscopic water.
- B. Root zone soil extent: The soil area influenced by plant roots and associated microorganisms is known as the I. Rhizosphere.
- C. Downward water movement into soil: The process of water entering the soil surface from above is termed III. Infiltration.
- D. Tensiometer function: An instrument employed for in-situ IV. Soil moisture measurement, quantifying soil water potential or tension.
Step 2: Consolidate the correct pairings.
- A \(\rightarrow\) II
- B \(\rightarrow\) I
- C \(\rightarrow\) III
- D \(\rightarrow\) IV
This set of pairings matches option (D).