Facultative bacteria are those which feed on

Options

A. Living matter
B. Non living
C. Both (A & B)
D. None of these

Answer

**Step-by-Step Solution:**

1. **Understanding Bacteria Types**: Begin by recognizing the two main types of bacteria based on their feeding habits: heterotrophs and saprophytes. Heterotrophs feed on living matter, while saprophytes feed on dead or decaying organic matter.

2. **Defining Facultative Bacteria**: Facultative bacteria are those that do not have a strict requirement for their food source. This means they can adapt to different types of food availability.

3. **Feeding Habits of Facultative Bacteria**: Since facultative bacteria can feed on both living and non-living matter, they can adjust their feeding habits based on what is available. This flexibility is what distinguishes them from obligate bacteria, which have strict dietary requirements.

4. **Identifying the Correct Option**: Given the options:
- Option 1: Living matter
- Option 2: Non-living matter
- Option 3: Living and non-living matter
- Option 4: Non-living matter only

Since facultative bacteria can feed on both living and non-living matter, the correct answer is Option 3: Living and non-living matter.

5. **Conclusion**: Therefore, facultative bacteria are those which feed on both living and non-living matter.

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