Stratification is seen in

Options

A. Tundra
B. Tropical forest
C. Deciduous forest
D. Desert

Answer

### Step-by-Step Solution:

1. **Understanding Stratification**:
- Stratification refers to the vertical distribution of various species in different layers or strata within an ecosystem. This means that different types of plants and animals occupy different levels in a habitat.

2. **Identifying Ecosystems**:
- The question provides four options: A) Tundra, B) Tropical Forest, C) Deciduous Forest, and D) Desert. We need to determine which of these ecosystems exhibit stratification.

3. **Analyzing Each Option**:
- **Tundra**: This ecosystem is characterized by low vegetation and does not have significant vertical layering, so stratification is minimal.
- **Tropical Forest**: This ecosystem is known for its rich biodiversity and distinct layers, including tall trees, smaller trees, shrubs, and ground cover plants. This is a prime example of stratification.
- **Deciduous Forest**: While there is some layering in deciduous forests, it is not as pronounced as in tropical forests. However, it does exhibit some level of stratification.
- **Desert**: Deserts typically have sparse vegetation and do not have a significant vertical structure, so stratification is not present.

4. **Conclusion**:
- Among the options provided, stratification is most prominently seen in the **Tropical Forest** (Option B).

### Final Answer:
- The correct answer is **B) Tropical Forest**.