Component of phloem which is absent in most of the monocots is

Options

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

Answer

### Step-by-Step Solution:

1. **Understanding Monocots**:
- Monocots, or monocotyledons, are a class of angiosperms characterized by having a single cotyledon in their seeds. Common examples include grasses, lilies, and orchids.

2. **Phloem Structure**:
- Phloem is a type of vascular tissue in plants responsible for the transport of nutrients and food produced by photosynthesis. It consists of several components:
- **Sieve Tubes**: Responsible for the transport of sugars and other metabolic products.
- **Companion Cells**: Assist sieve tubes in the transport process.
- **Phloem Parenchyma**: Involved in storage and lateral transport.
- **Phloem Fibers (Sclerenchyma)**: Provide structural support.

3. **Identifying the Absent Component**:
- In most monocots, the component that is typically absent is the **phloem parenchyma**. This is important because while sieve tubes, companion cells, and phloem fibers are present, the parenchyma is not found in many monocot species.

4. **Analyzing the Options**:
- Given the options:
- **Sieve Tube**: Present in monocots.
- **Companion Cells**: Present in monocots.
- **Phloem Fibers**: Present in monocots.
- **Phloem Parenchyma**: Absent in most monocots.
- The correct answer is **phloem parenchyma**.

5. **Conclusion**:
- The component of phloem that is absent in most monocots is **phloem parenchyma**.