Organisms which obtain energy by the oxidation of reduced inorganic compounds are

Options

A. Photo autotrophs
B. Photo heterotrophs
C. Chemo heterotrophs
D. Chemo autotrophs

Answer

To solve the question "Organisms which obtain energy by the oxidation of reduced inorganic compounds are," we can follow these steps:

### Step 1: Understand the Types of Organisms
We need to categorize organisms based on how they obtain energy. The key categories are:
- **Autotrophs**: Organisms that can produce their own food from inorganic substances.
- **Heterotrophs**: Organisms that cannot produce their own food and rely on other organisms for nutrition.

### Step 2: Differentiate Between Autotrophs and Heterotrophs
- **Photoautotrophs**: These organisms use light energy to convert carbon dioxide into organic compounds.
- **Chemoautotrophs**: These organisms obtain energy by oxidizing inorganic compounds and can fix carbon dioxide to produce organic compounds.
- **Photoheterotrophs**: These organisms use light for energy but cannot fix carbon dioxide directly.
- **Chemoheterotrophs**: These organisms obtain energy from organic compounds but cannot fix carbon dioxide.

### Step 3: Identify the Correct Option
The question specifically asks about organisms that obtain energy by the oxidation of reduced inorganic compounds. Based on our understanding:
- **Chemoautotrophs** are the organisms that fit this description because they derive energy from the oxidation of inorganic compounds.

### Conclusion
The correct answer to the question is **Chemoautotrophs**.

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