Assertion : Reticular fibrous connective Tissue is called as embryonic tissue.
Reason : Reticular fibrous connective tissue is mainly found in embryonic stage.

Options

A. If both Assertion and Reason are true and the Reason son is the correct explanation of the Assertion.
B. If both Assertion and Reason are true, but the Reason is not the correct explanation of the Assertion.
C. lf Assertion is true, but Reason is false.
D. If both Assertion and Reason are false.

Answer

To solve the question regarding the assertion and reason about reticular fibrous connective tissue, we will analyze both statements step by step.

### Step-by-Step Solution:

1. **Understand the Assertion**: The assertion states that "Reticular fibrous connective tissue is called as embryonic tissue."
- **Evaluation**: This statement is incorrect. While reticular connective tissue is a type of connective tissue, it is not classified as embryonic tissue. Embryonic tissues are typically categorized as mesenchyme and mucoid connective tissue.

2. **Understand the Reason**: The reason states that "Reticular fibrous connective tissue is mainly found in embryonic stage."
- **Evaluation**: This statement is also incorrect. Reticular connective tissue is not primarily found in the embryonic stage. Instead, mucoid connective tissue, which is jelly-like, is present during the embryonic stage and forms structures such as the umbilical cord.

3. **Conclusion**: Since both the assertion and the reason are incorrect, we can conclude that the correct option is that both the assertion and reason are false.

### Final Answer:
Both the assertion and reason are false.