Match the following columns
`{:("Column I","Column II"),(a."Photolysis of water",i."zinc"),(b."Diazotrophy",ii."Copper"),(c."Cytochrome-C oxidase",iii."Manganese"),(d."biosynthesis of IAA",iv."Molybdenum"),( , v."Boron"):}`

Options

A. a-iii,b-ii,c-I,d-v
B. a-iii,b-iv,c-ii,d-i
C. a-v,b-ii,c-iii,d-iv
D. a-iv,b-I,c-iii,d-ii

Answer

To solve the matching question, we will analyze each term in Column I and find the corresponding element from Column II based on their biological functions.

### Step-by-Step Solution:

1. **Photolysis of Water**:
- Photolysis of water refers to the process where water molecules are split into oxygen, protons, and electrons during photosynthesis.
- This process requires manganese ions (Mn²⁺) as a cofactor.
- **Match**: (a) Photolysis of water → (iii) Manganese.

2. **Diazotrophy**:
- Diazotrophy is the biological nitrogen fixation process where atmospheric nitrogen is converted into ammonia by certain bacteria.
- Molybdenum (Mo) is essential for the functioning of nitrogenase, the enzyme responsible for this process.
- **Match**: (b) Diazotrophy → (iv) Molybdenum.

3. **Cytochrome-C Oxidase**:
- Cytochrome-C oxidase is an enzyme involved in the electron transport chain, facilitating the reduction of oxygen to water.
- Copper (Cu) acts as a crucial cofactor for this enzyme.
- **Match**: (c) Cytochrome-C oxidase → (ii) Copper.

4. **Biosynthesis of IAA (Indole Acetic Acid)**:
- IAA is a plant hormone involved in growth regulation.
- Zinc (Zn) is necessary for the synthesis of IAA as it acts as a cofactor in various enzymatic reactions.
- **Match**: (d) Biosynthesis of IAA → (i) Zinc.

5. **Boron**:
- Boron (B) does not match with any of the terms in Column I but is known to be important for the transport of solutes in plants.

### Final Matches:
- (a) Photolysis of water → (iii) Manganese
- (b) Diazotrophy → (iv) Molybdenum
- (c) Cytochrome-C oxidase → (ii) Copper
- (d) Biosynthesis of IAA → (i) Zinc

### Answer:
The correct matching is:
- a - iii
- b - iv
- c - ii
- d - i