Assertion :- Dog fish and Whale are example of Homology.
Reason : Ancestors of Dog fish and Whale were terrestrial.

Options

A. If both Assertion & Reason are True & the Reason is a correct explanation of the Assertion.
B. If both Assertion & Reason are True but Reason is a not a correct explanation of the Assertion.
C. If Assertion is True but the Reason is False.
D. If both Assertion & Reason are false.

Answer

To solve the question, we need to analyze the assertion and the reason provided.

### Step-by-Step Solution:

1. **Understanding the Assertion**: The assertion states that "Dog fish and Whale are examples of Homology." Homologous structures are those that have a common evolutionary origin, even if they may serve different functions in the present day.

2. **Analyzing the Organisms**:
- **Dogfish**: A type of cartilaginous fish.
- **Whale**: A mammal that has adapted to an aquatic lifestyle.

3. **Identifying Their Origins**:
- The dogfish and whale belong to different classes of animals: one is a fish and the other is a mammal. Their evolutionary paths diverged a long time ago, indicating that they do not share a recent common ancestor.

4. **Understanding the Reason**: The reason states that "Ancestors of Dog fish and Whale were terrestrial." This implies that both organisms evolved from land-dwelling ancestors. However, while whales do have terrestrial ancestors (as mammals), dogfish do not; they evolved from aquatic ancestors.

5. **Conclusion on Assertion and Reason**:
- Since the assertion is incorrect (dogfish and whale do not exhibit homology), and the reason is also incorrect (the ancestors of dogfish were not terrestrial), we conclude that both the assertion and the reason are false.

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

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