Which of the following statements is true for photolithtrophs ?

Options

A. Obtain energy from radiations and carbon from organic source
B. Obtain energy from radiations and carbon from inorganic source
C. Obtain energy from organic compounds
D. Obtain energy from inorganic compounds

Answer

To determine which statement is true for photolithotrophs, we can analyze each option step by step.

### Step-by-Step Solution:

1. **Understanding Photolithotrophs**:
- Photolithotrophs are organisms that obtain energy from light (radiation) and use inorganic compounds as a source of carbon.

2. **Analyzing the Options**:
- **Option 1**: "Obtained energy from the radiation and carbon from organic source."
- This statement is incorrect. Photolithotrophs do not obtain carbon from organic sources; they use inorganic sources.

- **Option 2**: "Obtain energy from radiation and the carbon from inorganic source."
- This statement is correct. Photolithotrophs derive their energy from light (radiation) and use inorganic carbon sources (like CO2) for their carbon needs.

- **Option 3**: "Obtain energy from the inorganic compounds."
- This statement is incorrect. Photolithotrophs do not obtain energy from inorganic compounds; they obtain it from light.

- **Option 4**: "Obtained energy from the inorganic compounds."
- This statement is also incorrect for the same reason as option 3.

3. **Conclusion**:
- The only correct statement regarding photolithotrophs is **Option 2**: "Obtain energy from radiation and the carbon from inorganic source."

### Final Answer:
**The true statement for photolithotrophs is: "Obtain energy from radiation and the carbon from inorganic source." (Option 2)**

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