How many of the given cells do not possess nuclues? Companion cells Albuminous cells, Mature seve tube, Xylary fibres. Scléreids. Phloem parenchyma

Options

A. One
B. three
C. four
D. two

Answer

To determine how many of the given cells do not possess a nucleus, we will analyze each type of cell mentioned in the question.

### Step-by-Step Solution:

1. **Identify the Cells**: The cells listed are:
- Companion cells
- Albuminous cells
- Mature sieve tube
- Xylary fibers
- Sclereids
- Phloem parenchyma

2. **Analyze Each Cell Type**:
- **Companion Cells**: These cells are living cells that are associated with sieve tube elements and possess a nucleus.
- **Albuminous Cells**: These are also living cells found in the phloem and contain a nucleus.
- **Mature Sieve Tube Elements**: These cells are specialized for transport and lose their nucleus upon maturation.
- **Xylary Fibers**: These are dead cells that are part of the xylem and do not have a nucleus.
- **Sclereids**: These are also dead cells that lack a nucleus.
- **Phloem Parenchyma**: These cells are living and contain a nucleus.

3. **Count the Cells Without a Nucleus**:
- From the analysis, the cells without a nucleus are:
- Mature sieve tube elements
- Xylary fibers
- Sclereids
- Therefore, there are **3 cells** that do not possess a nucleus.

4. **Final Answer**: The number of cells that do not possess a nucleus is **3**.