Androecium having dissimilar stamens is

Options

A. Unequal
B. Heterostemonous
C. Diplostemonous
D. Obdiplostemonus

Answer

**Step-by-Step Solution:**

1. **Understanding Androecium**: The androecium is the male reproductive part of a flower, consisting of stamens. Each stamen typically consists of a filament and an anther.

2. **Identifying Dissimilar Stamens**: When we refer to dissimilar stamens, we are talking about stamens that are not uniform in size or shape. This is an important characteristic that differentiates certain types of flowers.

3. **Defining Heterostemonous**: The term used to describe an androecium with dissimilar stamens is "heterostemonous." In this type of androecium, the stamens vary in size and/or shape.

4. **Examples of Heterostemonous Flowers**: A common example of a flower with a heterostemonous androecium is the flower of Cassia. This flower exhibits stamens that are of different lengths.

5. **Reviewing Other Options**:
- "Unequal" refers to stamens that are not equal in size but does not specifically denote the variation in size as heterostemonous does.
- "Diplostaminous" refers to an androecium with two whorls of stamens, where one whorl alternates with petals and the other with sepals.
- "Ophidiplostaminous" is the opposite of diplostaminous, where the two whorls are arranged oppositely to petals and sepals.

6. **Conclusion**: Based on the definitions and examples provided, the correct answer to the question about the androecium having dissimilar stamens is "heterostemonous."

**Final Answer**: Heterostemonous

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