Which of the following is a modified stem for the protection of plants from browsing animals?

Options

A. Tendrils
B. Thorns
C. Rhizome
D. Tuber

Explanation

To solve the question "Which of the following is a modified stem for the protection of plants from browsing animals?", we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Question**: The question asks for a modified stem that serves the purpose of protecting plants from animals that browse or feed on them.

2. **Identify Key Terms**: The key terms here are "modified stem" and "protection from browsing animals". This suggests we are looking for a structure that is not just a regular stem but has adapted to serve a specific function.

3. **Consider Common Modified Stems**: In botany, there are several types of modified stems, including thorns, spines, and tendrils. However, we need to focus on those that specifically provide protection.

4. **Evaluate the Options**:
- **Thorns**: These are stiff, sharp, pointed woody projections that can be found on the stems or other parts of the plant. They serve to deter herbivores from feeding on the plant.
- **Other Options**: Without the specific options listed, we can still conclude that thorns are a well-known modified stem that serves the protective function.

5. **Conclusion**: Based on the understanding that thorns are modified stems that protect plants from browsing animals, we can conclude that the correct answer is **thorns**.

### Final Answer:
The correct answer is **thorns** (option b).

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