(a) is the smallest prokaryote and can survive with out (b)

Options

A. (a) asterococcus mycoides, (b)Oxyzen
B. (a) Mycoplasma mycoides, (b) Water
C. (a) Mycoplasma gallisepticum, (b) Oxyzen
D. (a) Mycoplasma gallisepticum, (b) Water

Answer

### Step-by-Step Solution:

1. **Identify the smallest prokaryote**: The question asks for the smallest prokaryote. The smallest known prokaryote is *Mycoplasma gallisepticum*.

2. **Understanding the characteristics of *Mycoplasma***:
- *Mycoplasma gallisepticum* is unique because it lacks a cell wall, which contributes to its small size (approximately 0.2 to 0.3 micrometers).
- This absence of a cell wall is significant because it allows *Mycoplasma* to be flexible and survive in various environments.

3. **Survival without essential components**:
- The question specifies that this organism can survive without (b). In this context, *Mycoplasma* can survive without oxygen, indicating that it is anaerobic.
- This means that *Mycoplasma* can thrive in environments that do not have oxygen, which is a crucial survival trait.

4. **Conclusion**: Therefore, the answer to the question is:
- (a) *Mycoplasma gallisepticum* is the smallest prokaryote.
- (b) It can survive without oxygen.

### Final Answer:
(a) *Mycoplasma gallisepticum* is the smallest prokaryote and can survive without (b) oxygen.

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