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 matching question, we will analyze each item in Column I and find the corresponding item in Column II.

### Step-by-Step Solution:

1. **Identify Potassium (A)**:
- Potassium is known to be involved in the regulation of stomatal movement. It is crucial for the opening and closing of stomata in guard cells.
- **Match**: A (Potassium) → (ii) Involved in stomatal movement.

2. **Identify Sulphur (B)**:
- Sulphur is a constituent of ferredoxin, which is a protein involved in electron transport in photosynthesis and is found in chloroplasts.
- **Match**: B (Sulphur) → (i) Constituent of ferredoxin.

3. **Identify Molybdenum (C)**:
- Molybdenum is an essential component of the enzyme nitrogenase, which is involved in nitrogen fixation in leguminous plants.
- **Match**: C (Molybdenum) → (iv) Component of nitrogenase.

4. **Identify Zinc (D)**:
- Zinc is required for the synthesis of auxin, which is a key plant hormone involved in growth and development.
- **Match**: D (Zinc) → (iii) Needed in the synthesis of Auxin.

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

### Conclusion:
The correct combination of matches is:
- A → ii
- B → i
- C → iv
- D → iii