A cavity present in vascular bundles of maize is formed by

Options

A. degeneration of xylem parenchyma
B. replacement of phloem parenchyma
C. disruption of protoxylem
D. dissolution of cells between metaxylem vessels.

Answer

To answer the question regarding the cavity present in vascular bundles of maize, we can follow these steps:

### Step-by-Step Solution:

1. **Identify the Plant Type**: Recognize that maize (Zea mays) is a monocot plant. This is important because the structure of vascular bundles in monocots differs from that in dicots.

2. **Understand Vascular Bundles**: In monocots, vascular bundles are typically scattered throughout the stem, and they consist of xylem and phloem tissues.

3. **Focus on Protoxylem**: Within the vascular bundles of maize, there are protoxylem cells. These cells are crucial for water transport and structural support.

4. **Disruption of Protoxylem**: In maize, the protoxylem cells can undergo disruption. This disruption is significant because it leads to the formation of cavities within the vascular bundles.

5. **Formation of Lysigenous Cavities**: The disruption of protoxylem cells results in the creation of lysigenous cavities, also known as protoxylem lacunae. These cavities are essentially empty spaces that can store water.

6. **Conclusion**: Based on the understanding of the vascular structure in maize, the correct answer to the question is that the cavity present in the vascular bundles of maize is formed by the disruption of protoxylem.

### Final Answer:
The cavity present in vascular bundles of maize is formed by the disruption of protoxylem.

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