Give two exmaples of secondary meristems.

Explanation

**Step-by-Step Solution:**

1. **Understanding Secondary Meristems:**
- Secondary meristems are plant tissues that arise from the de-differentiation of primary permanent tissues. This means that a tissue that has already differentiated into a specific function can revert back to a meristematic state, allowing it to divide and form new tissues.

2. **Defining De-differentiation:**
- De-differentiation is the process where differentiated tissues (like primary permanent tissues) lose their specialized functions and revert to a more primitive, meristematic state. This allows them to regain the ability to divide and contribute to growth.

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