What are special characters of vascular bundles of monocot leaves?

Explanation

### Step-by-Step Solution:

1. **Arrangement of Vascular Bundles**: In monocot leaves, the vascular bundles are arranged in a parallel manner. This is a distinctive feature that differentiates monocots from dicots, where vascular bundles are typically arranged in a ring.

2. **Type of Vascular Bundles**: The vascular bundles in monocot leaves are described as conjoint, collateral, and closed.
- **Conjoint**: This means that both xylem and phloem are present in the same bundle.
- **Collateral**: This indicates that xylem is located towards the inner side and phloem is on the outer side of the bundle.
- **Closed**: This means that there is no cambium present between the xylem and phloem, which is typical for monocots.
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