Which of the following is absent in the phloem of monocots

Options

A. Sieve elements
B. Phloem fibres
C. Phloem parenchyma
D. Companion cells

Answer

**Step-by-Step Solution:**

1. **Understanding Phloem Structure**: Phloem is a type of vascular tissue in plants responsible for the transport of nutrients, particularly sugars produced through photosynthesis. It consists of various cell types, including sieve elements, companion cells, phloem fibers, and phloem parenchyma.

2. **Identifying Components of Phloem**: In the context of monocots, we need to analyze which of these components are present or absent. The components mentioned in the question are:
- Sieve elements (or sieve tubes)
- Phloem fibers
- Phloem parenchyma
- Companion cells

3. **Analyzing Each Component**:
- **Sieve Elements**: Present in both monocots and dicots; they are essential for the transport of sugars.
- **Companion Cells**: Also present in monocots; they assist in the function of sieve elements.
- **Phloem Fibers**: These are typically present in monocots and provide structural support.
- **Phloem Parenchyma**: This type of cell is involved in storage and is generally found in dicots. In monocots, the storage function is primarily fulfilled by the endosperm in seeds.

4. **Conclusion**: Based on the analysis, phloem parenchyma is the component that is absent in the phloem of monocots. Therefore, the correct answer to the question is phloem parenchyma.

**Final Answer**: Phloem parenchyma is absent in the phloem of monocots.

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