Which of the following have two rings of vascular bundles in stem?

Options

A. Ipomoea
B. Dracaena
C. Cucurbia
D. Ficus

Answer

To determine which of the following plants have two rings of vascular bundles in their stem, we can follow these steps:

### Step-by-Step Solution:

1. **Understand Vascular Bundles**: Vascular bundles are the part of the plant's vascular system that transport water, nutrients, and food. They consist of xylem and phloem.

2. **Identify the Types of Vascular Bundles**: In plants, vascular bundles can be arranged in different patterns. The presence of two rings of vascular bundles is a specific characteristic.

3. **Recognize the Plant Types**: Certain plants, particularly dicots, may exhibit two rings of vascular bundles. This is a feature often associated with certain types of plants like Cucurbita (squash family).

4. **Analyze the Options**: If the options provided include Cucurbita, it is essential to recognize that this plant is known for having two rings of vascular bundles.

5. **Select the Correct Answer**: Based on the analysis, if option C corresponds to Cucurbita, then that is the correct answer.

### Final Answer:
The plant that has two rings of vascular bundles in its stem is **Cucurbita** (option C).

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