What will we call this condition of `A_(2+4)` which is a characteristic of cruciferae ?

Options

A. Didynamous
B. Tetradynamous
C. Homostamenous
D. Obdiplostamenous

Answer

To solve the question regarding the condition of `A_(2+4)` which is characteristic of the Cruciferae family, we will follow these steps:

### Step-by-Step Solution:

1. **Understand the Floral Formula**: The floral formula is a symbolic representation of the various parts of a flower. In this case, `A_(2+4)` indicates the arrangement of stamens in the flower.

2. **Analyze the Formula**: The formula `A_(2+4)` means that there are a total of 6 stamens, where 2 stamens are in one group and 4 stamens are in another group. This indicates that the stamens are arranged in two distinct folds.

3. **Identify the Options**: The options given are:
- Didynamous
- Tetradynamous
- Homostaminous
- Obdiplostaminous

4. **Define Each Term**:
- **Didynamous**: This condition has 4 stamens arranged in 2 pairs of unequal lengths (2+2).
- **Tetradynamous**: This condition has 6 stamens, with 4 being longer than the other 2 (4+2).
- **Homostaminous**: This condition has all stamens of the same length.
- **Obdiplostaminous**: This condition has two sets of stamens in alternating folds.

5. **Match the Condition**: The `A_(2+4)` condition matches the definition of the **Tetradynamous** arrangement, as it has 6 stamens with 4 being longer than the other 2.

6. **Conclusion**: Therefore, the condition `A_(2+4)` is characteristic of the **Tetradynamous** arrangement, which is typical for plants in the Cruciferae family.

### Final Answer:
**Tetradynamous**