Anaerobic respiration in the presence of micro organisms is known
as

Options

A. Pasteurization
B. Decay
C. Fermentation
D. Putrifaction

Answer

**Step-by-Step Solution:**

1. **Understanding Anaerobic Respiration:**
- Anaerobic respiration is defined as the process of breaking down food substances without the presence of oxygen. This occurs in certain conditions where oxygen is not available.

2. **Identifying the Role of Microorganisms:**
- In the context of anaerobic respiration, microorganisms such as yeast and certain bacteria play a crucial role. They are capable of carrying out this type of respiration.

3. **Recognizing the Types of Anaerobic Respiration:**
- There are different types of anaerobic respiration, including fermentation and putrefaction. However, the question specifically asks for anaerobic respiration in the presence of microorganisms.

4. **Defining Fermentation:**
- Fermentation is a specific type of anaerobic respiration that occurs in microorganisms. It involves the breakdown of glucose to produce energy, typically resulting in by-products like alcohol or lactic acid, depending on the organism involved.

5. **Conclusion:**
- Given the definitions and processes discussed, the correct term for anaerobic respiration in the presence of microorganisms is **fermentation**.

**Final Answer:**
Anaerobic respiration in the presence of microorganisms is known as **fermentation**.

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