Unicellular organism like Amoeba is an example of ______ .

Options

A. Chemoautotroph
B. Photoautotroph
C. Heterotroph
D. Both (a) and (b)

Explanation

**Step-by-Step Text Solution:**

1. **Understanding Unicellular Organisms**: Unicellular organisms are made up of a single cell. Amoeba is a well-known example of such an organism.

2. **Types of Nutrition**: Organisms can be classified based on how they obtain their nutrition. The main categories are:
- **Chemoautotrophs**: These organisms use chemical reactions to produce their own food. This category includes certain bacteria, but not Amoeba.
- **Photoautotrophs**: These organisms, like plants, use sunlight to produce food through photosynthesis. Amoeba does not fall under this category either.
- **Heterotrophs**: These organisms cannot produce their own food and instead rely on other organisms for nutrition.

3. **Amoeba's Nutrition**: Amoeba is classified as a heterotroph because it cannot synthesize its own food. Instead, it consumes other organisms.

4. **Mechanism of Feeding**: Amoeba uses structures called pseudopodia (often referred to as "false feet") to engulf food. This allows it to surround and take in food particles from its environment.

5. **Conclusion**: Based on the above points, we conclude that a unicellular organism like Amoeba is an example of **heterotrophs**.

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