Sepal is the unit of

Options

A. Corolla
B. Calyx
C. Androecium
D. Gynoecium

Answer

**Step-by-Step Solution:**

1. **Understanding Flower Structure**: A flower is a complex structure that can be divided into different parts or "worlds". These parts play various roles in the reproduction of the plant.

2. **Identifying the Four Worlds**: The flower is divided into four main parts:
- **Calyx**: This is the outermost part of the flower, which consists of sepals.
- **Corolla**: This is the part that consists of petals and is usually colorful to attract pollinators.
- **Androsium**: This is the male reproductive part of the flower, which consists of stamens.
- **Gynosium**: This is the female reproductive part of the flower, which consists of carpels.

3. **Defining Sepals**: Sepals are the individual units that make up the calyx. They are typically green and leaf-like, providing protection to the flower bud before it opens.

4. **Conclusion**: Since sepals are the individual units that form the calyx, we can conclude that the correct answer to the question "Sepal is the unit of" is "Calyx".

**Final Answer**: Sepal is the unit of Calyx.

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