Veins are irregularly distributed to form network in parallel venation.

Explanation

### Step-by-Step Solution:

1. **Understanding Venation**: Venation refers to the pattern of veins in a leaf. There are two main types of venation: parallel and reticulate.

2. **Identifying Parallel Venation**: In parallel venation, the veins run parallel to each other and do not intersect. This type of venation is characteristic of monocot plants, such as wheat and maize.

3. **Identifying Reticulate Venation**: In contrast, reticulate venation features a network of veins that branch out and intersect, forming a web-like pattern. This is typical of dicot plants, such as hibiscus and papaya.

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