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

Explanation

### Step-by-Step Solution:

1. **Understanding Growth in Higher Plants**:
- Higher plants possess the unique ability to grow throughout their life. This is in contrast to many animals, which have a fixed growth period.
- The continuous growth in plants is attributed to the presence of meristems, which are regions of undifferentiated cells capable of division.

2. **Role of Meristems**:
- Meristems are located at various points in the plant, such as the tips of roots and shoots (apical meristems) and in the vascular and cork cambium (lateral meristems).
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