Structure absent in Frog's testis is

Options

A. 1. Seminiferous tubules
B. 2. Seminal vesicles
C. 3. Sertoli cells
D. 4. Interstitial cells.

Answer

To answer the question regarding the structure absent in the frog's testis, we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Question**: The question asks for a structure that is not present in the testis of frogs.

2. **Identify the Structures**: We need to consider various structures associated with the testis and their functions. The common structures to consider are:
- Seminiferous tubules
- Seminal vesicles
- Sertoli cells
- Interstitial cells

3. **Analyze Each Structure**:
- **Seminiferous Tubules**: These are present in the testis and are responsible for the formation of sperm.
- **Seminal Vesicles**: These are not present in the testis; they are accessory glands that contribute to semen formation.
- **Sertoli Cells**: These are present in the testis and provide nourishment to developing sperm cells.
- **Interstitial Cells**: These are also present in the testis and are responsible for the secretion of male hormones (androgens).

4. **Determine the Absent Structure**: Based on the analysis, the structure that is absent in the frog's testis is the **seminal vesicle**.

5. **Conclusion**: Therefore, the answer to the question is that the structure absent in the frog's testis is the **seminal vesicle**.

### Final Answer:
The structure absent in frog's testis is the **seminal vesicle**.

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