Calyx is converted into hairy pappus in

Options

A. Helianthus
B. Ageratum
C. Carthamum
D. Sonchus.

Answer

To solve the question "Calyx is converted into hairy pappus in," we need to analyze the options provided and understand the role of the calyx in flowering plants.

### Step-by-Step Solution:

1. **Understanding Calyx**:
- The calyx is the collective term for the sepals of a flower. Sepals are usually green and serve to protect the flower in its bud stage.

2. **Identifying the Options**:
- The options provided are:
1. Halianthus
2. Egratum
3. Crithmum
4. Sunkers

3. **Analyzing Each Option**:
- **Halianthus**: In Halianthus (commonly known as sunflower), the calyx remains unchanged and does not convert into a pappus. Thus, this option is incorrect.
- **Egratum**: Similarly, in Egratum (a genus of flowering plants), the calyx also remains as it is and does not convert into a pappus. Therefore, this option is also incorrect.
- **Crithmum**: In Crithmum (commonly known as samphire), the calyx remains unchanged as well. Hence, this option is incorrect too.
- **Sunkers**: In Sunkers, the calyx is modified to form a hairy pappus. This modification allows for the dispersal of seeds. Therefore, this option is correct.

4. **Conclusion**:
- The correct answer is option 4: Sunkers, as it is the only plant where the calyx is converted into a hairy pappus.

### Final Answer:
Calyx is converted into hairy pappus in **Sunkers**.