Name two lateral meristem which help in secondary growth of stem and root.

Explanation

To answer the question about the two lateral meristems that help in the secondary growth of stem and root, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding Lateral Meristems**:
- Lateral meristems are types of meristematic tissues that contribute to the increase in thickness (girth) of stems and roots. This process is known as secondary growth.

2. **Identifying the Two Lateral Meristems**:
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