Connecting link between protozoa and non-celled plants is :

Options

A. Paramecium
B. Euglena
C. Amoeba
D. Trypanosoma

Answer

**Step-by-Step Solution:**

1. **Understanding the Question**: The question asks for the connecting link between protozoa (unicellular organisms) and non-celled plants (such as algae).

2. **Analyzing the Options**:
- **Option A: Paramecium**: This is a genus of eukaryotic unicellular ciliates. While it is a protozoan, it does not have characteristics that link it to non-celled plants. Therefore, it is not the correct answer.

- **Option B: Euglena**: This is a genus of single-celled flagellated protists. Euglena exhibits both plant-like and animal-like characteristics. It can photosynthesize like plants due to the presence of chloroplasts, but it can also move and feed like animals. This duality makes Euglena a connecting link between protozoa and non-celled plants. Thus, this is the correct answer.

- **Option C: Amoeba**: Amoeba is another type of protozoan that can change its shape and is not related to non-celled plants. Therefore, it is incorrect.

- **Option D: Trypanosoma**: This is a genus of parasitic protozoa and does not have any connection to non-celled plants. Hence, it is also incorrect.

3. **Conclusion**: Based on the analysis of the options, the connecting link between protozoa and non-celled plants is **Euglena**.

**Final Answer**: Euglena

---