The protective outer brown covering of stem and branches is called________

Explanation

**Step-by-Step Solution:**

1. **Identify the Question**: The question asks for the name of the protective outer covering of the stem and branches of a plant.

2. **Understand the Structure**: The outer covering of stems and branches is typically found in woody plants.

3. **Recall the Term**: The term used to describe this protective layer is "bark."

...