Vexillum, alea and keel are

Options

A. androecium
B. gynoecium
C. corolla
D. calyx

Answer

To answer the question regarding Vexillum, Alea, and Keel, we can break it down step by step:

### Step 1: Identify the Terms
- **Vexillum**: This is the largest petal of a flower, often referred to as the standard petal. It is typically located at the back of the flower.
- **Alea**: Also known as the wings, these are the two lateral petals that are smaller than the vexillum.
- **Keel**: This refers to the two smaller fused petals that are located at the bottom of the flower, resembling a boat's keel.

### Step 2: Understand Their Arrangement
- In a typical flower, especially in the family Fabaceae (legumes), the arrangement of these parts is crucial. The vexillum is positioned at the back, the alea (wings) are on the sides, and the keel is at the front, often enclosing the reproductive structures.

### Step 3: Relate to Flower Structure
- These three parts (vexillum, alea, and keel) are all components of the flower's corolla. The corolla is the collective term for all the petals of a flower.

### Step 4: Conclusion
- Therefore, Vexillum, Alea, and Keel are parts of the **Corolla** of a flower.

### Final Answer
Vexillum, Alea, and Keel are parts of the **Corolla**.

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