Vertical stratification is more diverse in grassland than desert ecosystem.

Explanation

### Step-by-Step Solution:

1. **Understanding Vertical Stratification**:
- Vertical stratification refers to the layering of different types of vegetation within an ecosystem based on their height. This means that plants and trees are organized into distinct layers or strata.

2. **Identifying Ecosystems**:
- The question compares two ecosystems: grasslands and deserts. It is important to note the characteristics of each ecosystem.

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