If flower is modified shoot, Floral organs calyx, corolla, androecium and gynoecium are

Options

A. Modified stem
B. Modified stem and leaves
C. Modified leaves only
D. Unknown modified organs.

Answer

To answer the question regarding the floral organs of a flower being modified structures, we can break down the solution into the following steps:

### Step-by-Step Solution:

1. **Understanding the Flower Structure**:
- A flower is a reproductive structure in angiosperms (flowering plants) and is considered a modified shoot. It arises from a condensed part of the stem known as the thalamus or receptacle.

2. **Identifying Floral Organs**:
- The main floral organs include:
- **Calyx**: The outermost whorl, typically made up of sepals, which protect the flower bud.
- **Corolla**: The next whorl, made of petals, which are often colorful and attract pollinators.
- **Androecium**: The male reproductive part, consisting of stamens that produce pollen.
- **Gynoecium**: The female reproductive part, consisting of carpels that contain ovules.

3. **Classification of Floral Organs**:
- The calyx and corolla are generally considered modified leaves (or bracts) because they serve protective and attractive functions.
- The androecium and gynoecium, while also part of the flower, are specialized structures for reproduction and can be considered modified parts of the stem.

4. **Conclusion**:
- Therefore, the floral organs calyx and corolla are modified leaves, while androecium and gynoecium can be classified as modified stem structures.

5. **Final Answer**:
- The correct classification is that the calyx and corolla are modified leaves, while the androecium and gynoecium are modified stem structures.