Monocots root are usually :-

Options

A. Diarch
B. Triarch
C. Tetrarch
D. Polyarch

Answer

**Step-by-Step Text Solution:**

1. **Understanding Monocot Roots**: Monocot roots belong to plants classified as monocotyledons, which typically have one seed leaf.

2. **Vascular Bundles in Roots**: In the context of root structure, vascular bundles are essential as they contain xylem and phloem tissues responsible for water and nutrient transport.

3. **Types of Vascular Bundle Arrangements**: The arrangement of vascular bundles in roots can vary. The common types include:
- Diarch: 2 vascular bundles
- Triarch: 3 vascular bundles
- Tetrarch: 4 vascular bundles
- Polyarch: Numerous vascular bundles

4. **Identifying Monocot Root Structure**: Monocot roots are characterized by having numerous vascular bundles, which is referred to as a polyarch arrangement. This means that they typically have many xylem and phloem strands.

5. **Comparison with Dicot Roots**: In contrast, dicot roots usually have a diarch to hexarch arrangement, meaning they have between 2 to 6 vascular bundles.

6. **Conclusion**: Therefore, the correct answer to the question "Monocots roots are usually:" is **polyarc**.

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