Explain: Diadelphous cohesion of stamens.

Answer

### Step-by-Step Solution:

1. **Understanding Cohesion of Stamens**:
- The term "cohesion of stamens" refers to the phenomenon where the stamens (the male reproductive parts of a flower) are united or fused together.

2. **Types of Cohesion**:
- There are different types of cohesion of stamens, one of which is known as "diadelphous".

3. **Definition of Diadelphous Condition**:
- Diadelphous cohesion of stamens is a specific condition where the filaments of the stamens are united together.

4. **Characteristics of Diadelphous Stamens**:
- In this condition, the filaments are fused to form two distinct bundles.
- Importantly, the anthers (the pollen-producing part of the stamen) remain free and are not fused.

5. **Etymology of the Term**:
- The prefix "di-" means two, indicating that there are two bundles formed from the united filaments. The term "adelphous" refers to the cohesion of stamens.

6. **Example of Diadelphous Condition**:
- A common example of diadelphous stamens can be found in pea plants (scientific name: *Pisum sativum*).

7. **Visual Representation**:
- A diagram can help illustrate the diadelphous condition, showing the two bundles of united filaments and the free anthers.