In a typical flower, calyx, corolla, androecium and gynoecium are attached on

Answer

To answer the question regarding where the calyx, corolla, androecium, and gynoecium are attached in a typical flower, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding Flower Structure**:
- A typical flower consists of four main parts: calyx, corolla, androecium, and gynoecium.
- Each of these parts has specific roles in the flower's function, particularly in reproduction and attraction of pollinators.

2. **Identifying Each Part**:
- **Calyx**: This is the outermost whorl of the flower, made up of sepals, which are usually green and protect the flower bud before it opens.
- **Corolla**: This is the next whorl, consisting of petals that are often brightly colored to attract pollinators.
- **Androecium**: This is the male reproductive part of the flower, consisting of stamens, which produce pollen.
- **Gynoecium**: This is the female reproductive part, consisting of one or more carpels, which contain the ovules.

3. **Finding the Attachment Point**:
- All these parts (calyx, corolla, androecium, and gynoecium) are attached to a specific part of the flower.
- This attachment point is known as the **thalamus** or **receptacle**.

4. **Conclusion**:
- Therefore, in a typical flower, the calyx, corolla, androecium, and gynoecium are all attached to the **thalamus** or **receptacle**.

### Final Answer:
In a typical flower, calyx, corolla, androecium, and gynoecium are attached on the **thalamus** or **receptacle**.

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