Microphagial nutrition occurs in

Options

A. Amphious
B. Hydra
C. Euglena
D. Paramaeium

Answer

**Step-by-Step Solution:**

1. **Understanding Microphagial Nutrition**: Microphagial nutrition refers to a type of nutrition where organisms feed on small particles or microorganisms. This is commonly observed in certain aquatic microorganisms.

2. **Identifying the Options**: The question provides four options: Amphioxus, Hydra, Euglena, and Paramecium. We need to determine which of these organisms exhibits microphagial nutrition.

3. **Analyzing Each Organism**:
- **Amphioxus**: This is a marine organism that primarily feeds on plankton and does not exhibit microphagial nutrition.
- **Hydra**: This is a freshwater organism that captures prey using its tentacles but does not specifically engage in microphagial nutrition.
- **Euglena**: This is a unicellular organism that can photosynthesize and is not primarily known for microphagial nutrition.
- **Paramecium**: This is a ciliated protozoan that feeds on small particles and microorganisms through a process involving cilia.

4. **Focusing on Paramecium**: Paramecium utilizes cilia to create water currents that help in engulfing food particles. The food particles are directed towards the cytopharynx, where they are enclosed in a food vacuole.

5. **Conclusion**: Based on the analysis, Paramecium is the organism that exhibits microphagial nutrition. Therefore, the correct answer is **Paramecium** (option number four).

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