The vascular bundles having sclerenchymatous patches against the phloem are known as .....

Explanation

To answer the question, "The vascular bundles having sclerenchymatous patches against the phloem are known as .....", we can follow these steps:

### Step-by-Step Solution:

1. **Understanding Vascular Bundles**: Vascular bundles are structures in plants that contain xylem and phloem, which are responsible for the transport of water, nutrients, and food.

2. **Identifying Types of Vascular Bundles**: Vascular bundles can be classified based on their arrangement and the presence of certain tissues. They can be collateral, concentric, or radial.

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