The technical term used for the androecium in a flower of China rose (Hibicus rosa-sinensis) is

Options

A. Diadelphous
B. Polyandrous
C. Polyadelphous
D. Monadelphous

Answer

To determine the technical term used for the androecium in the flower of China rose (Hibiscus rosa-sinensis), we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Structure of Androecium**: The androecium is the male reproductive part of a flower, consisting of stamens. Each stamen is made up of a filament and an anther.

2. **Identify the Flower**: The flower in question is the China rose, scientifically known as Hibiscus rosa-sinensis. It belongs to the Malvaceae family.

3. **Examine the Characteristics of the Stamens**: In the China rose, the flower has numerous stamens. A key characteristic of these stamens is that their filaments are united.

4. **Determine the Type of Union**: The filaments of the stamens in China rose are united to form a single group or tube around the style. This specific arrangement is important for identifying the correct term.

5. **Identify the Correct Technical Term**: The term used to describe the condition where the filaments of the stamens are fused into one group is "monoadelphous." This means that all the stamens are united by their filaments.

6. **Select the Correct Option**: Based on the options provided:
- Diadelfus
- Polyandros
- Polyadelfus
- Monoadelfus

The correct answer is "monoadelfus," which corresponds to option 4.

### Final Answer:
The technical term used for the androecium in a flower of China rose (Hibiscus rosa-sinensis) is **monoadelfus** (Option 4).

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