Which is the sequence of four whorls of flowers from outside to inside?

Options

A. Calyx `to` Corolia `to` Androecium `to` Gynoecium
B. Gynoecium `to` Androecium `to` Corolla `to` Calyx
C. Calyx `to` Androecium `to` Corolla `to` Gynoecium
D. Gynoecium `to` Corolla `to` Androecium `to` Calyx

Explanation

To determine the sequence of the four whorls of a flower from outside to inside, we can follow these steps:

### Step-by-Step Solution:

1. **Identify the Whorls**: The four main whorls of a flower are:
- Calyx
- Corolla
- Androecium
- Gynoecium

2. **Define Each Whorl**:
- **Calyx**: This is the outermost whorl and consists of sepals, which protect the flower bud before it opens.
- **Corolla**: This is the second whorl and consists of petals, which are often colorful and attract pollinators.
- **Androecium**: This is the third whorl and is made up of stamens, which are the male reproductive parts of the flower.
- **Gynoecium**: This is the innermost whorl and consists of carpels, which are the female reproductive parts of the flower.

3. **Arrange the Whorls from Outside to Inside**:
- The correct sequence from the outside to the inside is:
1. Calyx (sepals)
2. Corolla (petals)
3. Androecium (male reproductive parts)
4. Gynoecium (female reproductive parts)

4. **Conclusion**: Therefore, the sequence of the four whorls of flowers from outside to inside is:
- **Calyx → Corolla → Androecium → Gynoecium**