Match the column - I with column - II
`{:(,"Column - I",,"Column - II"),(1., "Micronutrients",A.,Fe),(2.,"Macronutrients ",B.,"Nitrosomonas"),(3.,"Nitrification",C.,S),(4.,"Denitrification",D.,"Thiobacillus"):}`

Options

A. 1 - C , 2 - A , 3 - D , 4 - B
B. 1 - C , 2 - A , B , 4 - D
C. 1 - A , 2 - C , 3 - D , 4 - B
D. 1 - A , 2 - C , 3 - B , 4 - D

Answer

To solve the matching question, we need to correctly pair the items from Column I with the items from Column II based on their definitions and relationships. Here’s a step-by-step breakdown:

### Step 1: Identify Micronutrients
- **Micronutrients** are essential nutrients that plants require in smaller amounts.
- From Column II, we see **Fe (Iron)**, which is a known micronutrient.

**Match:**
1. Micronutrients → A. Fe

### Step 2: Identify Macronutrients
- **Macronutrients** are nutrients that plants need in larger amounts.
- From Column II, **S (Sulfur)** is recognized as a macronutrient.

**Match:**
2. Macronutrients → C. S

### Step 3: Identify Nitrification
- **Nitrification** is the process where ammonia is converted into nitrites and then nitrates, facilitated by specific bacteria.
- **Nitrosomonas** is a type of bacteria that plays a crucial role in this process.

**Match:**
3. Nitrification → B. Nitrosomonas

### Step 4: Identify Denitrification
- **Denitrification** is the process where nitrates are reduced to nitrogen gas, also facilitated by specific bacteria.
- **Thiobacillus** is one of the bacteria involved in this process.

**Match:**
4. Denitrification → D. Thiobacillus

### Final Matches
- 1 → A (Micronutrients → Fe)
- 2 → C (Macronutrients → S)
- 3 → B (Nitrification → Nitrosomonas)
- 4 → D (Denitrification → Thiobacillus)

### Summary of Matches
1. Micronutrients → A. Fe
2. Macronutrients → C. S
3. Nitrification → B. Nitrosomonas
4. Denitrification → D. Thiobacillus