Why are xylem and phloem called complex tissues? How are they different from one other?

Explanation

**Step-by-Step Solution:**

1. **Definition of Complex Tissues:**
- Xylem and phloem are classified as complex tissues because they are composed of more than one type of cell. These different cell types work together to perform a common function in the plant.

2. **Characteristics of Complex Tissues:**
- Complex tissues consist of various cell types that coordinate with each other. This coordination is essential for their primary function, which is the translocation of substances within the plant.

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