Hairy leaves of many plants are associated with

Options

A. resistant to insect pests
B. resistance to viruses
C. resistance to fungi
D. resistance to bacteria.

Explanation

**Step-by-Step Solution:**

1. **Understanding the Question**: The question asks about the association of hairy leaves in many plants. Specifically, it seeks to identify what these hairy leaves provide resistance against.

2. **Identifying the Characteristics**: Hairy leaves are a morphological feature of certain plants. Morphological characteristics refer to the physical structure and form of the plants.

3. **Linking Morphological Features to Resistance**: Among the various types of resistance that plants can exhibit (to insects, viruses, fungi, and bacteria), hairy leaves are primarily associated with providing resistance to insect pests. This is due to their structure which can deter insects from feeding on the plant.

4. **Providing Examples**: Examples of plants with hairy leaves that exhibit resistance to insect pests include:
- Cotton plants that show resistance to the jassid (a type of insect).
- Wheat plants that demonstrate resistance to the cereal leaf beetle.

5. **Conclusion**: Based on the understanding that hairy leaves are a morphological trait that helps in resisting insect pests, the correct answer to the question is that hairy leaves of many plants are associated with resistance to insect pests.

**Final Answer**: Hairy leaves of many plants are associated with resistance to insect pests.

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