Apical stem of shoot apex is

Options

A. intercalary meristem
B. lateral meristem
C. primary meristem
D. secondary meristem

Answer

### Step-by-Step Solution:

1. **Understanding the Question**: The question asks about the nature of the apical stem of the shoot apex. We need to identify which type of meristem it is associated with.

2. **Identifying the Options**: The options provided are:
- A) Intracellular meristem
- B) Lateral meristem
- C) Primary meristem
- D) Secondary meristem

3. **Defining Apical Meristem**: The apical meristem is located at the tips of roots and shoots. It is responsible for the vertical growth of the plant.

4. **Understanding Meristem Types**:
- **Primary Meristem**: Responsible for the initial growth of the plant, leading to the formation of primary tissues.
- **Secondary Meristem**: Involved in the growth in thickness (secondary growth) of the plant.
- **Lateral Meristem**: A type of secondary meristem that contributes to the growth in girth.

5. **Correct Identification**: The apical meristem is specifically known as the growing tip of the plant and is associated with the primary meristem. It is not classified as an intracellular meristem.

6. **Conclusion**: The correct answer to the question is **C) Primary meristem**, as the apical stem of the shoot apex originates from the primary meristem.

### Final Answer:
C) Primary meristem