Which of the following is a complex tissue
(a) Parenchyma
(b) Collenchyma
(c) Xylem
(d) Sclerenchyma

Options

A. Parenchyma
B. Collenchyma
C. Xtlem
D. Sclerenchyma

Answer

To determine which of the following options is a complex tissue, we need to understand the definitions and characteristics of complex and simple tissues in plants.

### Step-by-Step Solution:

1. **Define Complex Tissue**:
- Complex tissues are made up of more than one type of cell that work together to perform a specific function. They usually consist of different cell types that contribute to the overall function of the tissue.

2. **Identify Types of Tissues**:
- In plants, there are two main types of tissues: simple tissues and complex tissues.
- Simple tissues are composed of only one type of cell, whereas complex tissues consist of multiple cell types.

3. **Analyze Each Option**:
- **Option (a) Parenchyma**: This is a simple tissue made up of only parenchyma cells, which are involved in storage, photosynthesis, and tissue repair.
- **Option (b) Collenchyma**: This is also a simple tissue composed of collenchyma cells, which provide support and flexibility to young stems and leaves.
- **Option (c) Xylem**: This is a complex tissue that consists of various types of cells, including tracheids, vessels, and xylem parenchyma, which are involved in the transport of water and minerals.
- **Option (d) Sclerenchyma**: This is a simple tissue made up of sclerenchyma cells, which provide structural support.

4. **Conclusion**:
- From the analysis, we can conclude that the only complex tissue among the options provided is **(c) Xylem**. The other options (a, b, and d) are all simple tissues.

### Final Answer:
The correct answer is **(c) Xylem**.