Number of spermatozoan, a single primary spermatocyte produces in spermatogenesis, is

Options

A. One
B. Two
C. Four
D. Eight

Answer

To determine the number of spermatozoa produced from a single primary spermatocyte during spermatogenesis, we can break down the process into several steps:

### Step-by-Step Solution

1. **Understanding Spermatogenesis**:
- Spermatogenesis is the process of sperm cell development that occurs in the male reproductive organs, specifically in the testes.

2. **Initial Germ Cell**:
- The process begins with a germ cell, which undergoes mitotic division to produce spermatogonia.

3. **Formation of Primary Spermatocyte**:
- The spermatogonia undergo mitotic division to form primary spermatocytes. Each primary spermatocyte is diploid (2n).

4. **Meiosis I**:
- Each primary spermatocyte then undergoes the first meiotic division (Meiosis I), which results in the formation of two secondary spermatocytes. Each of these secondary spermatocytes is haploid (n).

5. **Meiosis II**:
- Each secondary spermatocyte undergoes the second meiotic division (Meiosis II), resulting in the formation of two spermatids from each secondary spermatocyte.

6. **Total Spermatozoa Formation**:
- Since one primary spermatocyte produces two secondary spermatocytes, and each secondary spermatocyte produces two spermatids, the total number of spermatids (which develop into spermatozoa) produced from one primary spermatocyte is:
- 1 primary spermatocyte → 2 secondary spermatocytes → 4 spermatids (spermatozoa).

### Conclusion
Thus, a single primary spermatocyte produces **4 spermatozoa** during the process of spermatogenesis.

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