In obdiplostemonous androecium, stamens are arraged in

Options

A. One whorl alternating with petals
B. Two whorls with outer whorl opposite the petals
C. Two whorls with outer whorl alternating with petals
D. One whorls opposite the petals

Answer

To answer the question regarding the arrangement of stamens in an obdiplostemonous androecium, we can break down the information step by step:

### Step-by-Step Solution:

1. **Understanding Androecium**: The androecium is the male reproductive part of a flower, consisting of stamens. The arrangement of these stamens can vary among different flower types.

2. **Defining Obdiplostemonous Condition**: In an obdiplostemonous androecium, there are two whorls (or walls) of stamens. This is a specific arrangement that is distinct from other types such as diplostemonous.

3. **Arrangement of Stamens**:
- In the obdiplostemonous condition, the inner whorl of stamens is arranged opposite to the sepals (anti-sepals).
- The outer whorl of stamens is arranged opposite to the petals (anti-petals).

4. **Analyzing the Options**:
- **Option 1**: One wall alternating with petals - Incorrect.
- **Option 2**: Two walls with outer wall opposite the petals - Correct.
- **Option 3**: Two walls with outer wall alternating with petals - Incorrect.
- **Option 4**: One wall opposite the petals - Incorrect.

5. **Conclusion**: The correct answer is that in an obdiplostemonous androecium, the stamens are arranged in two walls with the outer wall opposite the petals (Option 2).

### Final Answer:
The correct arrangement of stamens in an obdiplostemonous androecium is **two walls with the outer wall opposite the petals**.

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