Match the following:
(a) Retting of fibres (Column I) (i) Clostridium tetani (Column II)
(b) Tetanus (Column I) (ii) Streptococcus lactis (Column II)
(c) Curing of tobacco leaves(Column I) (ii) Pseudomonas putida (Column II)
(d) Cheese and yogurt production (column I) (iv) Clostridium perfringens (Column II)
(e) Petroleum pollution control (Column I) (v) Bacillus megatherium (Column II)

Options

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

Answer

To solve the matching question, we will analyze each item in Column I and find the corresponding item in Column II based on their functions or associations.

### Step-by-Step Solution:

1. **Retting of fibres (a)**:
- Retting is a process used to separate fibers from plants, particularly in the production of textiles. It is typically carried out by certain bacteria.
- The correct match is **(iv) Clostridium perfringens**.
- **Match**: (a) → (iv)

2. **Tetanus (b)**:
- Tetanus is a disease caused by a specific bacterium that affects the nervous system.
- The correct match is **(i) Clostridium tetani**.
- **Match**: (b) → (i)

3. **Curing of tobacco leaves (c)**:
- Curing is a process that enhances the flavor and aroma of tobacco leaves, and certain bacteria are involved in this process.
- The correct match is **(v) Bacillus megatherium**.
- **Match**: (c) → (v)

4. **Cheese and yogurt production (d)**:
- The production of cheese and yogurt involves fermentation, primarily by lactic acid bacteria.
- The correct match is **(ii) Streptococcus lactis**.
- **Match**: (d) → (ii)

5. **Petroleum pollution control (e)**:
- Certain bacteria are known for their ability to degrade petroleum products, which is essential for bioremediation.
- The correct match is **(iii) Pseudomonas putida**.
- **Match**: (e) → (iii)

### Final Matches:
- (a) → (iv) Clostridium perfringens
- (b) → (i) Clostridium tetani
- (c) → (v) Bacillus megatherium
- (d) → (ii) Streptococcus lactis
- (e) → (iii) Pseudomonas putida

### Summary of Matches:
- A - iv
- B - i
- C - v
- D - ii
- E - iii