Primary wall grows by

Options

A. Accertion
B. Introgression
C. Intussusception
D. All the above

Answer

To answer the question "Primary wall grows by," we need to analyze the options provided and understand the processes involved in the growth of the primary cell wall in plants.

### Step-by-Step Solution:

1. **Understanding Primary Cell Wall Growth**:
The primary cell wall is the outermost layer of a plant cell and is primarily composed of cellulose, hemicellulose, and pectin. Its growth is crucial for cell expansion and overall plant development.

2. **Analyzing the Options**:
- **A. Assertion**: This term typically refers to a statement or claim. In the context of cell wall growth, it does not apply.
- **B. Integration**: This term is more related to combining parts into a whole. It is not a specific process related to the growth of the primary wall.
- **C. Intersection**: This term is not commonly used in the context of cell wall growth. However, the transcript mentions "intersucception," which refers to the deposition of cellulose leading to the formation of the primary cell wall.
- **D. All of the above**: This option implies that all previous options contribute to the growth of the primary wall, which is not accurate based on our analysis.

3. **Identifying the Correct Answer**:
Based on the analysis, the correct process for the growth of the primary wall is through **C. Intersection** (or intersucception), which involves the deposition of cellulose.

4. **Conclusion**:
Therefore, the primary wall grows by **C. Intersection**.

### Final Answer:
**C. Intersection**

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