Which one of the following pair is incorrectly matched in respect to the crop varieties for pest resistance ?

Options

A. `{:("Crop variety","Resistant to"),("Pusa Sawani","Fruit borers"):}`
B. `{:("Crop variety","Resistant to"),("Pusa Sem","Jessids and aphids"):}`
C. `{:("Crop variety","Resistant to"),("Pusa Gaurav","Aphids"):}`
D. `{:("Crop variety","Resistant to"),("Pusa Swarnim","Shoot borers"):}`

Answer

To determine which pair is incorrectly matched in respect to crop varieties for pest resistance, we will analyze each option provided in the question.

### Step-by-Step Solution:

1. **Identify the Crop Varieties and Their Resistance:**
- **Option A: Pusasavani** - This variety is known to be resistant to fruit borers.
- **Option B: Pusasem** - This variety is resistant to jassids and aphids.
- **Option C: Pusagaurav** - This variety is resistant to aphids.
- **Option D: Pusaswarnim** - This variety is claimed to be resistant to shoot borers.

2. **Evaluate Each Option:**
- **Option A (Pusasavani)**: This is a variety of okra (bhindi) and is indeed resistant to both shoot and fruit borers. This match is **correct**.
- **Option B (Pusasem)**: This is a variety of flat bean and is resistant to jassids, aphids, and fruit borers. This match is also **correct**.
- **Option C (Pusagaurav)**: This is a variety of brassica and is resistant to aphids. This match is **correct**.
- **Option D (Pusaswarnim)**: This variety is claimed to be resistant to shoot borers, but it is actually a disease-resistant variety against white rust, not a pest-resistant variety. Therefore, this match is **incorrect**.

3. **Conclusion:**
- The incorrectly matched pair in respect to crop varieties for pest resistance is **Option D: Pusaswarnim**.

### Final Answer:
The answer is **Option D: Pusaswarnim** is incorrectly matched as it is not a pest-resistant variety but a disease-resistant variety.

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