Assertion : Xylem and phloem are complex tissues.
Reason : Complex tissue is collection of different types of cells.

Options

A. If both assertion and reason are true and reason is the correct explanation of assertion.
B. If both assertion and reason are true but reason is not the correct explanation of assertion.
C. If assertion is true but reason is false.
D. If both assertion and reason are false.

Explanation

**Step-by-Step Solution:**

1. **Understanding the Assertion**: The assertion states that "Xylem and phloem are complex tissues."
- Xylem and phloem are indeed classified as complex tissues in plants. They consist of multiple types of cells that work together to perform specific functions.

2. **Understanding the Reason**: The reason given is "Complex tissue is a collection of different types of cells."
- This statement is correct. Complex tissues are made up of more than one type of cell, which allows them to perform various functions in plants.

3. **Analyzing the Relationship**: Now, we need to determine if the reason correctly explains the assertion.
- Since xylem and phloem are indeed complex tissues and are made up of different types of cells, the reason does provide a correct explanation for the assertion.

4. **Final Conclusion**: Both the assertion and the reason are correct, and the reason correctly justifies the assertion.
- Therefore, the answer is that both the assertion and reason are correct, and the reason is the correct explanation of the assertion.

**Final Answer**: Both the assertion and reason are correct, and the reason is the correct explanation of the assertion.

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