Pedicellate flowers with involucres of bracts is present in

Options

A. Onion and Euphorbia
B. Onion and Helianthus
C. Carrot and Tridax
D. Tridax and Cassia

Answer

To solve the question regarding which plants have pedicellate flowers with involucres of bracts, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding Key Terms**:
- **Pedicellate Flowers**: These are flowers that have a pedicel, which is a small stalk that supports the flower.
- **Involucres of Bracts**: This refers to a whorl of bracts (modified leaves) that can surround a flower or a cluster of flowers. Bracts can provide support and protection to the reproductive structures.

2. **Analyzing the Options**:
- The question provides multiple options, and we need to identify which of these options contain both pedicellate flowers and involucres of bracts.

3. **Evaluating Each Option**:
- **Option 1: Onion and Euphorbia**: Both of these plants have flowers that are pedicellate and possess involucres of bracts.
- **Option 2: Onion and Helianthus**: While onion has pedicellate flowers and involucres, Helianthus (sunflower) has pedicellate flowers but lacks involucres of bracts.
- **Option 3: Carrot and Tridax**: Both have pedicellate flowers, but they do not have involucres of bracts.
- **Option 4: Cassia**: This plant does not have pedicellate flowers.

4. **Conclusion**:
- After evaluating the options, the only pair that meets both criteria (pedicellate flowers and involucres of bracts) is **Onion and Euphorbia**. Therefore, the correct answer is **Onion and Euphorbia**.

### Final Answer:
The correct answer is **Onion and Euphorbia**.

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