Which of these is an example for zygomorphic flower with imbricate aestivation ?

Options

A. Canna
B. Cassia
C. Cucumber
D. Calotropis

Answer

To solve the question "Which of these is an example of a zygomorphic flower with imbricate aestivation?" we will follow these steps:

### Step 1: Understand the Terms
- **Zygomorphic Flower**: A flower that can be divided into two equal halves along one vertical plane only. This means it has bilateral symmetry.
- **Imbricate Aestivation**: A type of flower bud arrangement where the petals or sepals overlap each other like roof tiles.

### Step 2: Analyze the Options
We need to evaluate the provided options to determine which one is a zygomorphic flower with imbricate aestivation.

1. **Canna**: This flower is known to be asymmetrical, which means it does not exhibit zygomorphic symmetry.

2. **Cassia**: This flower is known to have zygomorphic characteristics and is also recognized for its imbricate aestivation.

3. **Cucumber**: This flower is actinomorphic, meaning it has radial symmetry and does not fit the definition of zygomorphic.

4. **Calotropis**: This flower is zygomorphic, but it does not exhibit imbricate aestivation.

### Step 3: Identify the Correct Answer
From the analysis, **Cassia** is the only option that is both zygomorphic and has imbricate aestivation.

### Conclusion
The correct answer is **Cassia**.

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