Bidder's canal is present in :

Options

A. Testis of frog
B. Kidney of frog
C. Kidney of rabbit
D. Both (a) and (c)

Answer

To solve the question "Bidder's canal is present in:", we will analyze the options provided and determine the correct answer step by step.

### Step-by-Step Solution:

1. **Understanding Bidder's Canal**:
- Bidder's canal is a structure associated with the reproductive system in certain amphibians, specifically frogs. It is important to know where this canal is located to answer the question correctly.

2. **Analyzing the Options**:
- **Option A: Testis of Frog**: This option suggests that Bidder's canal is located in the testis. However, this is incorrect as Bidder's canal is not found in the testis.
- **Option B: Kidney of Frog**: This option states that Bidder's canal is present in the kidney of the frog. This is correct, as Bidder's canal is indeed located in the kidney of frogs and serves to transport sperm from the testis.
- **Option C: Kidney of Rabbit**: This option suggests that Bidder's canal is found in the kidney of rabbits. This is incorrect, as Bidder's canal is specific to frogs.
- **Option D: Both A and B**: This option implies that Bidder's canal is present in both the testis of frogs and the kidney of frogs. Since we established that it is not in the testis, this option is incorrect.

3. **Conclusion**:
- After analyzing all the options, the only correct answer is **Option B: Kidney of Frog**.

### Final Answer:
Bidder's canal is present in the **Kidney of Frog**.

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