________ leaves with parallel venation are seen in monocotyledons.

Explanation

**Step-by-Step Solution:**

1. **Understanding Monocotyledons**: Monocotyledons, commonly referred to as monocots, are a group of flowering plants that typically have one seed leaf or cotyledon.

2. **Identifying Leaf Types**: In plants, leaves can be categorized based on their venation patterns. Two primary types of venation are parallel and reticulate (or net-like).

3. **Characteristics of Monocot Leaves**: Monocot leaves are characterized by parallel venation, which means that the veins run parallel to each other along the length of the leaf.

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