The vascular bundle in the stem of monocots are typically

Options

A. Collateral
B. Bicollateral
C. Radial
D. Concentric

Answer

**Step-by-Step Solution:**

1. **Identify the Structure of Vascular Bundles in Monocots:**
- In monocot stems, the vascular bundles are typically scattered throughout the ground tissue.

2. **Examine the Size of Vascular Bundles:**
- The vascular bundles towards the periphery (outer part) of the stem are small in size, while those towards the center are larger in size.

3. **Determine the Age of Vascular Bundles:**
- The smaller bundles at the periphery are younger, whereas the larger bundles at the center are older.

4. **Understand the Arrangement of Vascular Bundles:**
- The arrangement of vascular bundles in monocots is described as centrifugal or endarch, meaning that the larger bundles are located towards the center and smaller bundles towards the outside.

5. **Analyze the Composition of Vascular Bundles:**
- Each vascular bundle is surrounded by a bundle sheath made up of sclerenchyma cells, which provide support.

6. **Identify the Location of Xylem and Phloem:**
- In each vascular bundle, the xylem is located towards the inner surface, while the phloem is positioned towards the outer surface.

7. **Note the Absence of Cambium:**
- It is important to note that cambium is absent in monocot stems, which affects the classification of the vascular bundles.

8. **Classify the Vascular Bundles:**
- Given the absence of cambium, the vascular bundles are classified as conjoined, collateral, and closed types.

9. **Conclude the Answer:**
- Therefore, the vascular bundles in the stem of monocots are typically classified as collateral.

**Final Answer:**
The vascular bundles in the stem of monocots are typically collateral.

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