Highest degree of differentiation of the body is reached in

Options

A. Paramecium
B. euglena
C. trpanosoma
D. amoeba

Answer

To determine the organism that reaches the highest degree of differentiation of the body among the given options (Paramecium, Euglena, Trypanosoma, and Amoeba), we can analyze each organism based on their cellular structure and complexity.

### Step-by-Step Solution:

1. **Understanding the Organisms**:
- **Paramecium**: A single-celled protozoan that has a complex structure with specialized organelles such as contractile vacuoles, macronucleus, micronucleus, food vacuoles, and trichocysts.
- **Euglena**: A single-celled organism that has features of both plants and animals. It contains chloroplasts for photosynthesis and a flagellum for movement.
- **Trypanosoma**: A genus of unicellular parasitic protozoa known for causing diseases like sleeping sickness. It has a simple structure with a flagellum.
- **Amoeba**: A single-celled organism that is known for its ability to change shape and move using pseudopodia. It has a relatively simple structure.

2. **Analyzing Differentiation**:
- **Differentiation** refers to the specialization of cells and structures within an organism. The more specialized the structures and functions, the higher the degree of differentiation.
- Paramecium has a variety of specialized organelles that perform distinct functions, making it more complex than the other organisms listed.

3. **Comparing Complexity**:
- **Paramecium** has multiple organelles that perform various functions, indicating a high level of cellular differentiation.
- **Euglena** has some differentiation due to its chloroplasts but is still less complex than Paramecium.
- **Trypanosoma** and **Amoeba** have simpler structures and less specialization compared to Paramecium.

4. **Conclusion**:
- Based on the analysis, Paramecium exhibits the highest degree of differentiation due to its complex structure and specialized organelles.

### Final Answer:
The highest degree of differentiation of the body is reached in **Paramecium** (Option 1).