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 need to associate each item in Column I with the correct item in Column II based on the functions of the bacteria listed. Let's go through each item step by step.

### Step-by-Step Solution:

1. **Retting of Fibres (a)**:
- Retting is a process used to separate fibers from the plant material. It involves the action of bacteria that help dissolve the substances surrounding the fibers.
- The bacteria associated with this process is **Clostridium perfringens**.
- **Match**: (a) Retting of fibres → (iv) Clostridium perfringens

2. **Tetanus (b)**:
- Tetanus is caused by a specific bacterium that is well-known for causing this disease.
- The bacterium responsible for tetanus is **Clostridium tetani**.
- **Match**: (b) Tetanus → (i) Clostridium tetani

3. **Curing of Tobacco Leaves (c)**:
- Curing refers to the process of slow oxidation and degradation of carotenoids in tobacco leaves.
- The bacterium involved in this process is **Bacillus megatherium**.
- **Match**: (c) Curing of tobacco leaves → (v) Bacillus megatherium

4. **Cheese and Yogurt Production (d)**:
- The production of cheese and yogurt involves the fermentation of milk, which is facilitated by specific bacteria.
- The bacterium used for this purpose is **Streptococcus lactis**.
- **Match**: (d) Cheese and yogurt production → (ii) Streptococcus lactis

5. **Petroleum Pollution Control (e)**:
- Certain bacteria are known for their ability to degrade petroleum products, helping in bioremediation.
- The bacterium that plays a role in petroleum pollution control is **Pseudomonas putida**.
- **Match**: (e) Petroleum pollution control → (iii) Pseudomonas putida

### Final Matches:
- (a) Retting of fibres → (iv) Clostridium perfringens
- (b) Tetanus → (i) Clostridium tetani
- (c) Curing of tobacco leaves → (v) Bacillus megatherium
- (d) Cheese and yogurt production → (ii) Streptococcus lactis
- (e) Petroleum pollution control → (iii) Pseudomonas putida

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