Stem which are joined having hollow internodes and solid nodes are called

Options

A. Culm
B. Scape
C. Caudex
D. Stolon

Answer

To answer the question, "Stem which are joined having hollow internodes and solid nodes are called," we will analyze the characteristics of different types of stems and identify the correct one.

### Step-by-Step Solution:

1. **Understanding the Question**:
- We need to identify a type of stem that is characterized by being jointed, having hollow internodes, and solid nodes.

2. **Analyzing the Options**:
- **Option 1: Kalm**:
- Kalm is an erect stem that has nodes which are solid and swollen at certain points, giving it a jointed appearance. The internodes of Kalm are hollow. A common example of this type of stem is found in bamboo.
- This matches the description given in the question.

- **Option 2: Codex**:
- Codex refers to the main stem that is typically unbranched and has a crown of leaves at the top. Examples include coconut and palm trees. This does not fit the description of having hollow internodes and solid nodes.

- **Option 3: Stollen**:
- Stollen are specialized runners that grow horizontally and have long internodes. They initially grow upward before taking a downward arc to form new plants. Examples include strawberries and peppermint. This type does not match the criteria of hollow internodes and solid nodes.

3. **Conclusion**:
- Based on the analysis, the correct answer is **Kalm**, as it is the only option that satisfies all the conditions mentioned in the question.

### Final Answer:
The stem which is joined, having hollow internodes and solid nodes is called **Kalm**.