Which of the following is a non symbiotic aerobic nitrogen fixing bacteria?

Options

A. Beijerinckia
B. Xanthomonas
C. Clostridinum
D. Mycobacterium

Answer

To solve the question "Which of the following is a non-symbiotic aerobic nitrogen-fixing bacteria?", we will follow these steps:

### Step 1: Understand the Criteria
We need to identify a bacterium that meets the following three criteria:
1. Non-symbiotic
2. Aerobic
3. Nitrogen-fixing

### Step 2: Analyze the Options
We have four options to consider:
1. Bacteria
2. Xanthomonas
3. Clostridium
4. Mycobacterium

### Step 3: Evaluate Each Option
- **Option 1: Bacteria** - This is too vague and does not specify a particular type of bacteria. Therefore, we cannot conclude anything from this option.

- **Option 2: Xanthomonas** - This is known to be a disease-causing bacterium. It does not meet the criteria of being nitrogen-fixing, so this option is incorrect.

- **Option 3: Clostridium** - Clostridium is a non-symbiotic nitrogen-fixing bacterium, but it is anaerobic, which means it does not satisfy the aerobic condition. Thus, this option is incorrect.

- **Option 4: Mycobacterium** - While some species of Mycobacterium can fix nitrogen, they are not classified as aerobic and do not meet the non-symbiotic condition. Therefore, this option is also incorrect.

### Step 4: Identify the Correct Answer
After evaluating all options, we find that none of the provided options correctly fit all three criteria. However, based on the video transcript, it seems the intended correct answer is "Bajriknsia" (though it was not listed in the options). This bacterium is non-symbiotic, aerobic, and nitrogen-fixing.

### Conclusion
The correct answer to the question is **Bajriknsia**, which satisfies all three conditions of being non-symbiotic, aerobic, and nitrogen-fixing.

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