Which one of the following can respire in the total absence of air?

Options

A. Cockroach
B. Leucosolenia
C. Amoeba
D. Taenia solium

Explanation

To determine which organism can respire in the total absence of air, we need to analyze the options provided and understand their respiratory mechanisms.

### Step-by-Step Solution:

1. **Understanding Respiration**:
- Respiration is a biological process where organisms exchange gases, primarily taking in oxygen and expelling carbon dioxide. Most animals require oxygen for survival.

2. **Analyzing the Options**:
- **Cockroach**:
- Cockroaches have a respiratory system that includes a network of tracheae. They require air to obtain oxygen and cannot survive in the absence of it.
- **Leukosilinia**:
- This is an aquatic organism (a sponge) that relies on dissolved oxygen in water, which ultimately comes from the air. Therefore, it cannot respire in total absence of air.
- **Amoeba**:
- Amoebas are protists that also require oxygen for respiration. They are aerobic and cannot survive without air.
- **Taenia solium (Pork Tapeworm)**:
- This is a parasitic organism that lives in the intestines of its host (like pigs and humans). It has adapted to survive without oxygen, as it does not need to carry out aerobic respiration. It can perform anaerobic respiration and does not require atmospheric air.

3. **Conclusion**:
- Based on the analysis, the only organism that can respire in the total absence of air is **Taenia solium**. It has evolved to survive in anaerobic conditions within the intestines of its host.

### Final Answer:
**Taenia solium** can respire in the total absence of air.

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