‘Both growth and differentiation in higher plants are open’. Comment.

Explanation

**Step-by-Step Solution:**

1. **Understanding the Terms:**
- The term "open" in the context of growth and differentiation in higher plants refers to the continuous nature of these processes throughout the plant's life. Unlike animals, where growth is often limited to certain developmental stages, higher plants can grow and differentiate at various stages.

2. **Meristematic Cells:**
- Growth in higher plants primarily occurs in meristematic tissues, which are regions of actively dividing cells. These cells are responsible for the plant's growth and can differentiate into various types of cells.

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