The presence of corollary corona, sagittate anthers and dumb-bell shaped stigma are the characteristic features of

Options

A. Musa paradisiaca
B. Hibiscus rosa-sinensis
C. Catharnathus roseus
D. Ravenala madagascariensis

Explanation

To solve the question regarding the characteristic features of corollary corona, sagittate anthers, and dumb-bell shaped stigma, we can follow these steps:

### Step-by-Step Solution:

1. **Identify the Features**: The question lists three specific features: corollary corona, sagittate anthers, and dumb-bell shaped stigma. We need to find which plant species exhibits all these features.

2. **Analyze Each Option**: The options provided are:
- Moussa paradisiaca
- Hibiscus rosa-sinensis
- Chetranthus rousius
- Revinella madagascariensis

3. **Research Each Plant**: We need to check the morphological characteristics of each plant:
- **Moussa paradisiaca**: Known as banana, does not typically have these features.
- **Hibiscus rosa-sinensis**: Common hibiscus, does not exhibit these specific characteristics.
- **Chetranthus rousius**: Also known as periwinkle, does exhibit corollary corona, sagittate anthers, and dumb-bell shaped stigma.
- **Revinella madagascariensis**: Less commonly known, but does not match the features listed.

4. **Confirm the Correct Answer**: Based on the analysis, Chetranthus rousius is the only plant that possesses all three characteristics: corollary corona, sagittate anthers, and dumb-bell shaped stigma.

5. **Conclusion**: Therefore, the correct answer to the question is Chetranthus rousius.

### Final Answer:
The presence of corollary corona, sagittate anthers, and dumb-bell shaped stigma are the characteristic features of **Chetranthus rousius**.

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