Mark the correct match :

Options

A. Amoeboid protozoan - All endoparasite
B. Flagellated protozoan - Paramoecium
C. Sporozoan - Absence of locomotory structure
D. Ciliated protozoan - Entamoeba

Answer

To solve the question of marking the correct match among the options provided regarding protozoans, we will analyze each option step by step.

### Step-by-Step Solution:

1. **Identify the Types of Protozoans**:
- Protozoans are classified into four main types: Amoeboid, Flagellated, Ciliated, and Sporozoan.

2. **Evaluate the First Option (Amoeboid Protozoan)**:
- The first option states that amoeboid protozoans are matched with "all are parasites." This is **incorrect** because not all amoeboid protozoans are parasites. While some, like Entamoeba, are parasitic, many are free-living.

3. **Evaluate the Second Option (Flagellated Protozoan)**:
- The second option states that flagellated protozoans are matched with "all are parasites." This is also **incorrect**. Flagellated protozoans, such as Trypanosoma, can be free-living or parasitic, but they are not exclusively parasites.

4. **Evaluate the Third Option (Ciliated Protozoan)**:
- The third option states that ciliated protozoans are matched with "all are parasites." This is **incorrect** as well. Ciliated protozoans, like Paramecium, are primarily free-living organisms.

5. **Evaluate the Fourth Option (Sporozoan)**:
- The fourth option states that sporozoans are matched with "absence of locomotory structures." This is **correct**. Sporozoans, such as Plasmodium, do not have cilia, flagella, or pseudopodia for movement.

6. **Evaluate the Fifth Option (Ciliated Protozoan and Entamoeba)**:
- The fifth option states that ciliated protozoans are matched with Entamoeba. This is **incorrect** because Entamoeba is an example of amoeboid protozoans, not ciliated.

7. **Conclusion**:
- The only correct match is the sporozoan with the absence of locomotory structures.

### Final Answer:
The correct match is **Sporozoan - Absence of locomotory structures**.