In a typical complete, bisexual and hypogynous flower the arrangement of floral whorls on the thalamus from the outermost to the innermost is

Options

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

Explanation

To answer the question regarding the arrangement of floral whorls in a typical complete, bisexual, and hypogynous flower, we will follow these steps:

### Step-by-Step Solution:

1. **Understand the Terms**:
- A **complete flower** has all four whorls: calyx, corolla, androecium, and gynoecium.
- A **bisexual flower** contains both male (androecium) and female (gynoecium) reproductive structures.
- A **hypogynous flower** has the ovary positioned above the other floral parts.

2. **Identify the Floral Whorls**:
- The floral whorls from the outermost to the innermost are:
- **Calyx**: This is the outermost whorl, consisting of sepals that protect the flower.
- **Corolla**: This is the second whorl, made up of petals that are often colorful and attract pollinators.
- **Androecium**: This is the third whorl, consisting of stamens which are the male reproductive parts of the flower.
- **Gynoecium**: This is the innermost whorl, consisting of carpels which are the female reproductive parts of the flower.

3. **Arrange the Floral Whorls**:
- Based on the definitions and the structure of a hypogynous flower, the arrangement from the outermost to the innermost is:
- **Calyx**
- **Corolla**
- **Androecium**
- **Gynoecium**

### Final Answer:
In a typical complete, bisexual, and hypogynous flower, the arrangement of floral whorls on the thalamus from the outermost to the innermost is:
**Calyx → Corolla → Androecium → Gynoecium**