The primary growth in plants results from:

Options

A. primary cambium
B. cambium
C. promeristem
D. lateral meristems

Explanation

To answer the question, "The primary growth in plants results from:", we will analyze the options provided and identify the correct answer step by step.

### Step-by-Step Solution:

1. **Understanding Primary Growth**:
- Primary growth in plants refers to the increase in length or height of the plant. It occurs at the tips of roots and shoots and is responsible for the elongation of these parts.

2. **Identifying the Options**:
- The options given are:
1. Primary Cambium
2. Cambium
3. Promeristem
4. Lateral Meristem

3. **Evaluating Each Option**:
- **Primary Cambium**: This is a type of vascular tissue involved in secondary growth, not primary growth. Therefore, it is not the correct answer.
- **Cambium**: This term generally refers to the lateral meristem that contributes to secondary growth (increasing the diameter of stems and roots). Hence, it is also not the correct answer.
- **Lateral Meristem**: As mentioned, this is involved in secondary growth and does not contribute to primary growth. Thus, it is not the correct answer.
- **Promeristem**: This is the correct answer. Promeristem is a type of meristematic tissue that is responsible for the primary growth of plants. It is found in the early embryo and gives rise to other types of meristems, including the apical meristem, which is crucial for primary growth.

4. **Conclusion**:
- Based on the evaluation of the options, the primary growth in plants results from **Promeristem**.

### Final Answer:
The primary growth in plants results from **Promeristem**.

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