Vascular bundles are bicollateral while corolla is plicate in bud in family

Options

A. Asteraceae
B. Solanaceae
C. Liliaceae
D. Fabaceae.

Answer

To solve the question regarding the family of flowering plants with bicollateral vascular bundles and a plicate corolla in bud, we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Terms**:
- **Bicollateral Vascular Bundles**: This type of vascular bundle has two phloem tissues (outer and inner), two cambium layers (outer and inner), and a central xylem.
- **Plicate Corolla**: This refers to petals that are folded in a specific manner, often resembling a bell or funnel shape when in bud.

2. **Identify the Characteristics**:
- The question specifies that the vascular bundles are bicollateral. This is a key characteristic that we need to focus on.
- Additionally, the corolla being plicate indicates a specific arrangement of the petals in the bud.

3. **Analyze the Options**:
- We have four families to consider: Asteraceae, Solanaceae, Liliaceae, and Fabaceae.
- We need to determine which of these families is known for having bicollateral vascular bundles and a plicate corolla.

4. **Research the Families**:
- **Asteraceae**: Generally known for having different types of vascular bundles, not specifically bicollateral.
- **Solanaceae**: Known for having bicollateral vascular bundles and the corolla is often plicate in bud.
- **Liliaceae**: Typically has different vascular arrangements and does not usually exhibit bicollateral bundles.
- **Fabaceae**: Also does not have bicollateral bundles as a characteristic feature.

5. **Conclusion**:
- Based on the characteristics of the vascular bundles and the corolla arrangement, the family that fits both criteria is **Solanaceae**.

### Final Answer:
The family with bicollateral vascular bundles and a plicate corolla in bud is **Solanaceae**.

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