Ectomycorrhiza is found in

Options

A. Several trees and shrubs of tropical areas
B. Many vascular plants of tropical area
C. Several trees and shrubs of temperate area
D. Small vascular plants.

Answer

### Step-by-Step Solution:

1. **Understanding Ectomycorrhiza**:
- Ectomycorrhiza refers to a symbiotic association between fungi and the roots of higher plants. This relationship is crucial for nutrient exchange, particularly in nutrient-poor soils.

2. **Identifying the Types of Plants**:
- Ectomycorrhizae are primarily associated with woody plants, which include trees and shrubs. This is important to note as it helps narrow down the options provided.

3. **Analyzing the Options**:
- The options given are:
- Several trees and shrubs of tropical areas
- Many vascular plants of tropical areas
- Several trees and shrubs of temperate areas
- Small vascular plants
- We need to determine which of these options is most likely to host ectomycorrhizae.

4. **Focusing on Plant Habitats**:
- Ectomycorrhizae are predominantly found in temperate regions rather than tropical regions. This is due to the specific environmental conditions that favor the growth of ectomycorrhizal fungi.

5. **Identifying Specific Plant Families**:
- Ectomycorrhizae are commonly found in various woody plants such as birch, myrtle, beech, willow, and pine. These plants are typically found in temperate areas.

6. **Conclusion**:
- Based on the analysis, the correct answer is that ectomycorrhizae are found in "several trees and shrubs of temperate areas".

### Final Answer:
Ectomycorrhiza is found in several trees and shrubs of temperate areas.

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