Parallel venation is a characteristic of monocots. Which of the following is an exception to this generalisation ?

Options

A. Smilax
B. Colocasia
C. Alocasia
D. All of these

Explanation

To solve the question regarding parallel venation being a characteristic of monocots and identifying an exception to this generalization, follow these steps:

### Step-by-Step Solution:

1. **Understand the Concept of Venation**:
- Venation refers to the pattern of veins in the leaves of plants. In monocots (monocotyledons), the typical pattern is parallel venation, where the veins run parallel to each other.

2. **Identify the Generalization**:
- The generalization states that parallel venation is a characteristic feature of monocots. This means that most monocots exhibit this type of venation.

3. **Look for Exceptions**:
- To find an exception, we need to identify monocots that do not follow this pattern and instead exhibit reticulate venation, which is characterized by a network-like arrangement of veins.

4. **Research Known Exceptions**:
- Some known examples of monocots that exhibit reticulate venation include Mylax, Colocasia, and Alocasia. These plants do not conform to the typical parallel venation pattern.

5. **Conclude the Answer**:
- Therefore, Mylax, Colocasia, and Alocasia are exceptions to the generalization that parallel venation is characteristic of monocots.

### Final Answer:
The exceptions to the generalization that parallel venation is characteristic of monocots are Mylax, Colocasia, and Alocasia.

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