Match the items in 'Column-A' and 'column-B' and choose the correct answer .
`{:((i),"Column - A",,"Column - B"),((i) ,"Koel",A,"Methanobacterium"),((ii),"Mycorrhiza",B,"Trichoderma"),((iii),"Biological control",C,"Brood parasitism"),((iv),"Biogas",D,"Glomus"):}`
The correct answer is

Options

A. i-B , ii - D , iii - C , iv - A
B. i-C , ii - D , iii - B , iv - A
C. i-D , ii - A , iii - B , iv - C
D. i-C , ii - B , iii - A, iv - D

Answer

To solve the matching question, we need to correctly pair the items from Column A with those in Column B based on their definitions and relationships. Let's go through each item step by step.

### Step-by-Step Solution:

1. **Identify Koel**:
- The Koel is known for its brood parasitism behavior. It lays its eggs in the nests of other birds, such as crows, which then raise the Koel's young.
- **Match**: Koel → Brood parasitism (C)

2. **Identify Mycorrhiza**:
- Mycorrhiza refers to the symbiotic association between fungi and plant roots. Glomus is a well-known genus of fungi that forms mycorrhizal associations with plants.
- **Match**: Mycorrhiza → Glomus (D)

3. **Identify Biological Control**:
- Biological control involves using living organisms to control pest populations. Trichoderma is a genus of fungi that is used as a biocontrol agent against plant pathogens.
- **Match**: Biological control → Trichoderma (B)

4. **Identify Biogas**:
- Biogas is produced by the anaerobic digestion of organic matter, and Methanobacterium is a type of bacteria that produces methane, which is a key component of biogas.
- **Match**: Biogas → Methanobacterium (A)

### Final Matches:
- (i) Koel → C (Brood parasitism)
- (ii) Mycorrhiza → D (Glomus)
- (iii) Biological control → B (Trichoderma)
- (iv) Biogas → A (Methanobacterium)

### Conclusion:
The correct answer is:
- (i) C
- (ii) D
- (iii) B
- (iv) A