Barophillic prokaryotes

Options

A. Grow slowly in highly alkaline frozen lakes at high altitudes
B. Occur in water containing high concentrations of barium hydroxide
C. Grow and multiply in very deep marine sediments
D. Readily grown and divides in sea water enriched in any soluble salt of barium

Answer

### Step-by-Step Solution:

1. **Understanding Barophilic Prokaryotes**:
- Barophilic prokaryotes, also known as barophiles, are organisms that thrive in high-pressure environments. They are typically found in deep-sea habitats where the pressure is significantly greater than at sea level.

2. **Characteristics of Barophilic Prokaryotes**:
- These organisms can grow and multiply in environments such as deep marine sediments. They are adapted to survive and function optimally under extreme pressure conditions.

3. **Analyzing the Given Options**:
- The question provides several statements regarding the habitat and conditions under which barophilic prokaryotes exist. We need to evaluate each statement to determine which one accurately describes them.

4. **Evaluating Each Option**:
- **Option 1**: "Glow slowly in high alkaline frozen lakes at high altitude" - This is incorrect because barophilic prokaryotes are not typically associated with high-altitude environments; they prefer deep-sea conditions.
- **Option 2**: "Occur in water containing high concentration of barium hydroxide" - This is also incorrect as it does not specifically relate to the high-pressure conditions that define barophilic prokaryotes.
- **Option 3**: "Grow and multiply in very deep marine sediments" - This is the correct option, as it aligns with the known habitats of barophilic prokaryotes.
- **Option 4**: "Readily grow and divide in seawater and rich in any soluble salt of barium" - While some prokaryotes may thrive in seawater, this statement does not specifically highlight the high-pressure aspect that is crucial for barophilic prokaryotes.

5. **Conclusion**:
- Based on the evaluation, the correct answer is that barophilic prokaryotes grow and multiply in very deep marine sediments.