Chemoautotrophic bacteria resemble the photosynthetic bacteria in

Options

A. Oxidising inorganic compounds for synthesizing ATP
B. causing photolysis of `H_(2)O` to get H
C. synthesizing carbohydrate through Calvin cycle
D. synthesize assimilatory power

Answer

**Step-by-Step Solution:**

1. **Understanding Chemoautotrophic Bacteria:**
- Chemoautotrophic bacteria are organisms that can synthesize their own food using inorganic compounds. They obtain energy by oxidizing these compounds, which allows them to produce ATP (adenosine triphosphate), the energy currency of the cell.

2. **Understanding Photosynthetic Bacteria:**
- Photosynthetic bacteria, on the other hand, also synthesize their own food but utilize light energy to do so. They typically use light to drive the process of photosynthesis, which involves the photolysis of water to produce oxygen and hydrogen.

3. **Identifying Similarities:**
- Both types of bacteria are autotrophic, meaning they can produce their own food. The key similarity lies in their ability to fix carbon dioxide and synthesize carbohydrates through the Calvin cycle. This process is essential for both groups as it allows them to convert inorganic carbon into organic compounds.

4. **Analyzing the Options:**
- The question presents several characteristics:
- **Oxidizing inorganic compounds to synthesize ATP:** This is specific to chemoautotrophic bacteria.
- **Causing photolysis of water:** This is specific to photosynthetic bacteria.
- **Synthesizing carbohydrate through the Calvin cycle:** This is common to both types of bacteria.
- **Synthesize assimilatory power:** This is a general process that occurs in both but is not specific.

5. **Conclusion:**
- The correct answer to the question is that chemoautotrophic bacteria resemble photosynthetic bacteria in their ability to synthesize carbohydrates through the Calvin cycle.