The two nostrils are separated by a cartilaginous wall called ___________ .

Explanation

**Step-by-Step Solution:**

1. **Identify the Question**: The question asks for the name of the cartilaginous wall that separates the two nostrils.

2. **Understand the Anatomy**: The two nostrils are part of the nasal structure. They are the openings that allow air to enter the respiratory system.

3. **Recall Relevant Information**: In human anatomy, there is a structure that divides the nasal cavity into two halves. This structure is made of cartilage.

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