The first meiotic division during Spermatogenesis takes place when :

Options

A. Primary spermatocytes divide to from secondary spermatocytes
B. Secondary spermatocytes divide to from spermatids
C. Spermatogonia division to from primary spermatocytes
D. Spermatids to spermatozoa

Answer

To solve the question regarding when the first meiotic division during spermatogenesis takes place, we can break down the process step by step.

### Step-by-Step Solution:

1. **Understanding Spermatogenesis**:
- Spermatogenesis is the biological process of sperm formation in males. It involves several stages and divisions.

2. **Identifying Key Stages**:
- The process begins with **spermatogonia**, which are the initial germ cells.
- Spermatogonia undergo **mitosis** to produce **primary spermatocytes**.

3. **First Meiotic Division**:
- The primary spermatocyte is the cell that undergoes the first meiotic division (Meiosis I).
- During Meiosis I, the primary spermatocyte divides to form **secondary spermatocytes**.

4. **Subsequent Divisions**:
- The secondary spermatocytes then undergo Meiosis II to produce **spermatids**.
- Finally, spermatids mature into **spermatozoa**.

5. **Analyzing the Options**:
- Option 1: "Primary spermatocyte divides to form secondary spermatocytes" - This is correct as it describes the first meiotic division.
- Option 2: "Secondary spermatocytes divide to form spermatids" - This describes Meiosis II, not the first meiotic division.
- Option 3: "Spermatogonia division to form primary spermatocytes" - This is a mitotic division, not meiotic.
- Option 4: "Spermatids to spermatozoa" - This is the maturation process, not a meiotic division.

6. **Conclusion**:
- The first meiotic division during spermatogenesis occurs when the **primary spermatocyte divides to form secondary spermatocytes**. Therefore, the correct answer is **Option 1**.