Plant A and B are tendrillar climbers of Liliaceae. Plant A in its leaf exhibits a character of dicot and plant B has underground horizontal modified stem. Plant A and B respectively are

Options

A. Smilax and Colchicum
B. Gloriosa and Smilax
C. Pisum and Lathyrus
D. Smilax and Gloriosa

Answer

To solve the question regarding Plant A and Plant B, which are tendrillar climbers of the Liliaceae family, we can follow these steps:

### Step-by-Step Solution:

1. **Identify the Characteristics of Plant A**:
- Plant A exhibits a leaf structure that shows characteristics of a dicot. Dicotyledons (dicots) typically have broad leaves with a network of veins and a distinct petiole.

2. **Identify the Characteristics of Plant B**:
- Plant B has an underground horizontal modified stem. This type of modification is known as a rhizome, which is a stem that grows horizontally underground and can produce new shoots and roots.

3. **Determine the Plants in Question**:
- We need to identify which plants from the options provided fit the descriptions of Plant A and Plant B. The options given are:
- Smilax, Colchicum
- Smilax, Pisum, Lathrus
- Smilax and Glorisa
- Pisum and Lathrus

4. **Match the Characteristics with the Options**:
- **Smilax**: This is known to have tendrils and can exhibit dicot characteristics in its leaves.
- **Pisum**: This is a well-known dicot plant (pea plant) and has tendrils, fitting the description for Plant A.
- **Lathrus**: This is also a tendril climber and belongs to the Liliaceae family, fitting the description for Plant B with its rhizome.
- **Colchicum and Glorisa** do not fit the descriptions provided for Plant A and Plant B.

5. **Conclusion**:
- Based on the characteristics and the options, Plant A corresponds to Pisum (a dicot) and Plant B corresponds to Lathrus (which has a rhizome). Thus, the correct answer is **Pisum and Lathrus**.

### Final Answer:
Plant A and B are respectively **Pisum and Lathrus**.

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