An organelle without a limiting membrane ........

Explanation

### Step-by-Step Solution:

1. **Identify the Question**: The question asks for an organelle that does not have a limiting membrane.

2. **Define Limiting Membrane**: A limiting membrane, also known as a membrane-bound structure, is a lipid bilayer that encloses an organelle, separating its contents from the cytoplasm.

3. **Identify Non-Membrane Organelles**: Among the various organelles in a cell, some are membrane-bound (like the nucleus, mitochondria, etc.), while others are not.

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