The blunt protoplasmic extensions are known as ______

Explanation

**Step-by-Step Text Solution:**

1. **Understanding Protoplasmic Extensions**: The question refers to "blunt protoplasmic extensions" found in certain organisms. These extensions are particularly associated with a group of protozoans.

2. **Identifying the Group**: The organisms that exhibit these protoplasmic extensions belong to the group known as rhizopods, which are also referred to as amoeboid protozoans.

3. **Defining the Extensions**: The blunt protoplasmic extensions in these organisms are specifically called **pseudopodia**.

...