Chemoautotrophy occurs in kingdom

Options

A. Plantae
B. Protista
C. Monera
D. All the above.

Answer

**Step-by-Step Solution:**

1. **Understanding Chemoautotrophy**: Chemoautotrophy refers to the process by which certain organisms obtain energy by oxidizing inorganic substances, and they use this energy to convert carbon dioxide into organic compounds. These organisms are known as chemoautotrophs.

2. **Identifying the Kingdoms**: The question provides four options:
- Planti (Plants)
- Protista
- Monera
- All of the above

3. **Analyzing Each Kingdom**:
- **Planti (Plants)**: Plants are primarily photoautotrophs, meaning they use sunlight to produce their food through photosynthesis. They do not engage in chemoautotrophy.
- **Protista**: This kingdom includes a variety of organisms, some of which are autotrophs (like algae that perform photosynthesis) and some that are heterotrophs (which depend on other organisms for food). However, they do not primarily exhibit chemoautotrophy.
- **Monera**: This kingdom consists of prokaryotic organisms, including bacteria. Some bacteria are known to be chemoautotrophs, as they can derive energy from inorganic compounds (like hydrogen sulfide or ammonia) and use that energy to synthesize organic molecules.

4. **Conclusion**: Based on the analysis, the kingdom where chemoautotrophy occurs is Monera. Therefore, the correct answer to the question is Monera.

**Final Answer**: Chemoautotrophy occurs in the kingdom Monera.

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