The stem with bicollateral vascular bundles and flowers with synandrous condition is found in

Options

A. Compositae
B. Solanaceae
C. Cucurbitaceae
D. Asclepiadaceae

Answer

To solve the question regarding the plant family that has stems with bicollateral vascular bundles and flowers with a synandrous condition, we can follow these steps:

### Step 1: Understand the Terms
- **Bicollateral Vascular Bundles**: These are vascular bundles where the phloem is located on both sides of the xylem. This means that there are two layers of phloem surrounding the xylem.
- **Synandrous Condition**: This refers to a floral structure where the stamens (the male reproductive parts) are fused together.

### Step 2: Identify the Plant Families
We need to analyze the given options:
1. **Cucurbitaceae**: Known for having bicollateral vascular bundles and synandrous flowers.
2. **Solanaceae**: Typically has collateral vascular bundles and does not exhibit synandrous conditions.
3. **Daceae**: This family does not commonly exhibit bicollateral vascular bundles or synandrous conditions.
4. **Asperiaceae**: Similar to Solanaceae, it does not typically have these characteristics.

### Step 3: Match Characteristics to Families
- Since bicollateral vascular bundles and synandrous conditions are specific features, we can eliminate the families that do not exhibit these traits.
- The **Cucurbitaceae** family is known for both having bicollateral vascular bundles and flowers with a synandrous condition.

### Conclusion
Based on the analysis, the correct answer to the question is:
**Cucurbitaceae**