Match the following .
`{:(,"Column-I (Mineral)",,"Column-II (Role)"),(a.,K,(i),"Water splitting "),(b.,Zn,(ii),"Energy metabolism"),(c.,Mg,(iii),"Auxin synthesis"),(d.,Mn,(iv),"Stomatal movement"):}`

Options

A. a (iv) , b (iii) , c (i) , d (ii)
B. a (iv) , b (iii) , c (ii) , d (i)
C. a (i) , b (ii) , c (iii) , d (iv)
D. a (i) , b (ii) , c (iv) , d (iii)

Answer

To solve the matching question, we need to pair each mineral from Column I with its corresponding role from Column II based on the information provided.

### Step-by-Step Solution:

1. **Identify the Minerals and Their Roles**:
- **Column I**:
- (a) K (Potassium)
- (b) Zn (Zinc)
- (c) Mg (Magnesium)
- (d) Mn (Manganese)
- **Column II**:
- (i) Water splitting
- (ii) Energy metabolism
- (iii) Auxin synthesis
- (iv) Stomatal movement

2. **Analyze Each Mineral**:
- **Potassium (K)**:
- Role: Responsible for stomatal movement (iv).
- Hint: Potassium ions help in the opening and closing of stomata.
- **Zinc (Zn)**:
- Role: Needed for the synthesis of auxin (iii).
- Hint: Zinc acts as an activator for enzymes involved in auxin production.
- **Magnesium (Mg)**:
- Role: Involved in energy metabolism (ii).
- Hint: Magnesium is a key component of chlorophyll and is essential for photosynthesis.
- **Manganese (Mn)**:
- Role: Responsible for water splitting (i).
- Hint: Manganese plays a crucial role in the photosynthetic process by splitting water molecules.

3. **Match the Minerals with Their Roles**:
- (a) K → (iv) Stomatal movement
- (b) Zn → (iii) Auxin synthesis
- (c) Mg → (ii) Energy metabolism
- (d) Mn → (i) Water splitting

4. **Final Matching**:
- A - iv
- B - iii
- C - ii
- D - i

### Final Answer:
- (a) K → (iv) Stomatal movement
- (b) Zn → (iii) Auxin synthesis
- (c) Mg → (ii) Energy metabolism
- (d) Mn → (i) Water splitting