The xylem that is formed from procambium and has lignified cell walls is known as

Options

A. primary xylem
B. secondary phloem
C. protoxylem
D. metaxylem

Answer

To solve the question, "The xylem that is formed from procambium and has lignified cell walls is known as," we can follow these steps:

### Step-by-Step Solution:

1. **Understanding Procambium**:
- Procambium is a type of meristematic tissue in plants. It is responsible for the formation of primary vascular tissues, which include xylem and phloem.

2. **Identifying Vascular System**:
- The vascular system in plants consists of two main types of tissues: xylem and phloem. Xylem is primarily responsible for the conduction of water and minerals from the roots to the rest of the plant.

3. **Types of Xylem**:
- There are two types of xylem: primary xylem and secondary xylem.
- **Primary Xylem**: This type is formed from procambium and is present in the primary plant body.
- **Secondary Xylem**: This type is formed from vascular cambium (a lateral meristem) and is involved in secondary growth.

4. **Characteristics of Xylem**:
- Xylem consists of four main elements: tracheids, vessels, xylem fibers, and xylem parenchyma.
- Both tracheids and vessels have lignified cell walls, which provide structural support and facilitate water transport.

5. **Conclusion**:
- Since the question specifies xylem that is formed from procambium and has lignified cell walls, the correct answer is **primary xylem**.

### Final Answer:
The xylem that is formed from procambium and has lignified cell walls is known as **primary xylem**.

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