This is not the locomotory organ of protozoa

The correct option is Parapodia.

Protozoans are microscopic, unicellular eukaryotic organisms that exhibit various modes of locomotion. They are classified into different groups based on the specific locomotory structures they possess:
1. Pseudopodia (false feet) are temporary cytoplasmic extensions used for movement and engulfing food, characteristic of amoeboid protozoans (e.g., Ameoba).
2. Flagella are long, whip-like structures that help in propulsion, characteristic of flagellated protozoans (e.g., Euglena).
3. Cilia are short, hair-like projections that beat rhythmically to move the cell or draw in food, characteristic of ciliated protozoans (e.g., Paramecium).

In contrast, parapodia are lateral, fleshy, unjointed protrusions found in segmented worms or annelids (such as Nereis). They are multicellular structures used for swimming and respiration, and are not found in unicellular protozoans. Therefore, parapodia is not a locomotory organ of protozoa.