Besides the flagellary movement, Euglenoids can also perform special movement by membrane undulations called "Euglenoid movement". Euglenoids are included in :-

Options

A. Monera
B. Metazoa
C. Metaphyta
D. Protista

Answer

To answer the question regarding the classification of Euglenoids based on their movement, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding Euglenoids**: Euglenoids are a group of unicellular organisms that exhibit both plant-like and animal-like characteristics. They can perform flagellary movement and a special movement known as "Euglenoid movement," which is facilitated by the undulation of their membrane.

2. **Analyzing Movement Types**:
- **Flagellary Movement**: This is the primary mode of locomotion for Euglenoids, involving the use of flagella.
- **Euglenoid Movement**: This is a non-progressive movement of the protoplasm, facilitated by the anterior flagella and elastic bodies present in the organism.

3. **Identifying the Options**: The question provides four options for the classification of Euglenoids:
- **Monera**
- **Metazoa**
- **Metaphyta**
- **Protista**

4. **Evaluating Each Option**:
- **Monera**: Organisms in this kingdom are prokaryotic, have rigid cell walls, and lack flagella. Therefore, Euglenoid movement is absent here.
- **Metazoa**: This kingdom includes multicellular organisms that are heterotrophic and possess posterior flagella. Euglenoid movement is absent in Metazoa.
- **Metaphyta**: This kingdom consists of multicellular autotrophs. Similar to the previous options, Euglenoid movement is not present here due to the absence of flagella.
- **Protista**: This kingdom consists of unicellular organisms that can be flagellated or non-flagellated. Euglenoids fall under this category as they possess a pellicle and can perform Euglenoid movement.

5. **Conclusion**: Based on the analysis, Euglenoids are best classified under the kingdom **Protista**, as they exhibit characteristics that align with this group, including the ability to perform Euglenoid movement.

### Final Answer:
Euglenoids are included in **Protista**.

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