Which protists do not possess any external locomotory organelles ? How these protists move ?

Explanation

**Step-by-Step Solution:**

1. **Identify the Protists Without External Locomotory Organs:**
- The protists that do not possess any external locomotory organelles are primarily those that utilize pseudopodia for movement. An example of such a protist is **Amoeba**.

2. **Understanding Locomotory Organelles:**
- In the kingdom Protista, various types of locomotory organelles exist, such as cilia, flagella, and myonemes. However, pseudopodia are not considered external locomotory organelles as they are temporary extensions of the cell itself.

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