The dead component of pholem

Options

A. sieve tube elements
B. Companion cells
C. pholem parenchyma
D. pholen fibres

Answer

To answer the question about the dead component of phloem, we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Structure of Phloem**:
- Phloem is a type of vascular tissue in plants responsible for the transport of nutrients, particularly sugars produced during photosynthesis.

2. **Identify the Components of Phloem**:
- Phloem is composed of several types of cells:
- Sieve tubes
- Companion cells
- Phloem fibers
- Phloem parenchyma

3. **Determine Which Components are Living**:
- Sieve tubes and companion cells are involved in the transport process and are considered living cells. Companion cells support sieve tubes by providing metabolic functions.
- Phloem parenchyma cells are also living cells that serve various functions, including storage.

4. **Identify the Dead Component**:
- Among the components listed, phloem fibers are the only ones that are dead at maturity. They provide structural support to the phloem but do not participate in the transport of nutrients.

5. **Conclusion**:
- Therefore, the dead component of phloem is the **phloem fibers**.

### Final Answer:
The dead component of phloem is **phloem fibers**.

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