Where does primary growth occur in plants?

Answer

### Step-by-Step Solution:

1. **Understanding Primary Growth**:
- Primary growth refers to the increase in length of the plant. It is responsible for the elongation of roots and shoots.

2. **Location of Primary Growth**:
- Primary growth occurs at the **apical buds** of the plant. These are located at the tips of the stems and roots.

3. **Role of Apical Buds**:
- Apical buds promote **apical dominance**, which means they inhibit the growth of lateral (axillary) buds. This allows the plant to grow taller rather than wider.

4. **Axillary Buds**:
- Axillary buds are located in the leaf axils (the angle between the leaf and the stem). When the apical bud is intact, the growth of these axillary buds is suppressed.

5. **Effect of Removing Apical Buds**:
- If the apical bud is removed, the inhibition on the axillary buds is lifted, allowing them to grow and develop into lateral branches.

6. **Conclusion**:
- Therefore, the primary growth in plants occurs specifically at the **apical bud region**, which is crucial for the vertical growth of the plant.