________ constitute the complex tissues in plants

Options

A. Xylem, phloem
B. Phloem, metaxylem
C. Parenchyma, xylem
D. Xylem, metaxylem

Answer

To answer the question "________ constitute the complex tissues in plants," we need to identify which tissues are classified as complex tissues.

1. **Understanding Complex Tissues**:
- Complex tissues in plants are those that are made up of more than one type of cell. The two main types of complex tissues in plants are xylem and phloem.

2. **Identifying Xylem**:
- Xylem is responsible for the conduction of water and minerals from the roots to other parts of the plant. It consists of various cell types including tracheids, xylem vessels, xylem parenchyma, and xylem fibers.

3. **Identifying Phloem**:
- Phloem is responsible for the transport of food materials (mainly sugars) throughout the plant. It is composed of sieve tube elements, companion cells, phloem fibers, and phloem parenchyma.

4. **Conclusion**:
- Since both xylem and phloem are made up of multiple cell types and perform essential functions in the plant, they are classified as complex tissues.

Thus, the answer to the question is: **Xylem and Phloem constitute the complex tissues in plants.**