Stem may function for

Options

A. Protection
B. Spread of branches
C. Storage, support and vegetative propagation
D. All the above

Answer

### Step-by-Step Solution:

1. **Understanding the Stem's Role**: The stem is a crucial part of the plant that is primarily located above the soil, although some stems can be modified and found underground.

2. **Functions of the Stem**:
- **Storage**: Modified stems, such as those of onions and ginger, are found underground and serve the purpose of storing nutrients, primarily starch. This is vital for the plant's energy needs.
- **Support**: Stems provide structural support to the plant. They help in maintaining the plant's upright position and allow it to grow towards sunlight.
- **Protection**: Some stems develop thorns or other protective structures that help the plant defend against herbivores and environmental stress.
- **Spread of Branches**: Stems facilitate the branching of the plant, which is essential for growth and the overall architecture of the plant.
- **Vegetative Propagation**: Stems can also reproduce asexually. When a part of the stem is cut, it can grow into a new plant, a process known as vegetative propagation.

3. **Conclusion**: Given the various functions of the stem, it is clear that the stem serves multiple purposes, including storage, support, protection, branching, and vegetative propagation.

4. **Final Answer**: Therefore, the correct answer to the question "Stem may function for" is **all of the above**.