Assertion : In frog, copulatory pads lie on the pollex digit.
Reason: These copulatory pads help in transfer of sperms.

Options

A. If both Assertion and Reason are true and Reason is correct explanation of Assertion
B. If both Assertion and Reason are true but Reason is not a correct explanation of Assertion.
C. If Assertion is true but Reason is False
D. If both Assertion and Reason are false

Answer

To analyze the assertion and reason provided in the question, we can break it down into a step-by-step solution.

### Step-by-Step Solution:

1. **Understanding the Assertion**:
- The assertion states that in frogs, copulatory pads lie on the pollex digit. The pollex is the first digit of the forelimb, commonly referred to as the thumb. This is true as male frogs have these pads on their forelimbs.

2. **Understanding the Reason**:
- The reason given is that these copulatory pads help in the transfer of sperm. This statement is misleading. While copulatory pads do play a role during mating, their primary function is not to transfer sperm directly.

3. **Function of Copulatory Pads**:
- The main function of copulatory pads in male frogs is to hold onto the female during mating (amplexus). This ensures that the male can maintain a secure position on the female while fertilization occurs externally.

4. **Evaluating the Truth of Assertion and Reason**:
- The assertion is true because copulatory pads are indeed located on the pollex digit of male frogs.
- The reason is false because the primary function of the copulatory pads is not to transfer sperm but to hold the female frog securely during copulation.

5. **Conclusion**:
- Based on the evaluation, we can conclude that the assertion is true, but the reason is false. Therefore, the correct answer is that the assertion is true and the reason is false.

### Final Answer:
- The assertion is true, and the reason is false.