Match the following and choose the correct combination from the options given
`{:(,"Column I",,"Column II"),((A),"Potassium ",(i),"Constituent of ferredoxin"),((B),"Sulphur",(ii),"Involved in stomatal movement"),((C),"Molybdenum",(iii),"Needed in the synthesis of Auxin"),((D),"Zinc",(iv),"Component of nitogenase"):}`

Options

A. a – 2,b – 1, c – 4, d – 3
B. a –1 2,b – 2,c – 3, d – 4
C. a –4 2,b – 3,c – 2, d – 1
D. a –1 2,b – 3 ,c – 4, d – 2

Answer

To solve the question of matching the elements in Column I with their respective descriptions in Column II, we will analyze each item step by step.

### Step-by-Step Solution:

1. **Identify Potassium (A)**:
- Potassium is known to play a crucial role in the opening and closing of stomata. It accumulates in guard cells, leading to increased turgidity and thus the opening of stomata.
- **Match**: Potassium (A) → Involved in stomatal movement (ii).

2. **Identify Sulphur (B)**:
- Sulphur is a key component of certain proteins and enzymes. It is a constituent of ferredoxin, which is involved in electron transport.
- **Match**: Sulphur (B) → Constituent of ferredoxin (i).

3. **Identify Molybdenum (C)**:
- Molybdenum is an essential micronutrient that serves as a cofactor for enzymes, particularly nitrogenase, which is involved in the nitrogen fixation process.
- **Match**: Molybdenum (C) → Component of nitrogenase (iv).

4. **Identify Zinc (D)**:
- Zinc is important for the synthesis of auxins, which are plant hormones that regulate growth.
- **Match**: Zinc (D) → Needed in the synthesis of Auxin (iii).

### Final Matches:
- A → ii (Potassium → Involved in stomatal movement)
- B → i (Sulphur → Constituent of ferredoxin)
- C → iv (Molybdenum → Component of nitrogenase)
- D → iii (Zinc → Needed in the synthesis of Auxin)

### Conclusion:
The correct combination of matches is:
- A (Potassium) matches with ii (Involved in stomatal movement)
- B (Sulphur) matches with i (Constituent of ferredoxin)
- C (Molybdenum) matches with iv (Component of nitrogenase)
- D (Zinc) matches with iii (Needed in the synthesis of Auxin)