Which of the following is group of cells in the male gonad, represent haploid cells?

Options

A. Spermatogonial cells
B. Germinal epithelial cells
C. Secondary spermatocytes
D. Primary spermatocytes

Explanation

To solve the question "Which of the following is a group of cells in the male gonad that represents haploid cells?", we need to analyze the options provided and understand the differences between haploid and diploid cells in the context of male gametogenesis.

### Step-by-Step Solution:

1. **Understand the Terms:**
- **Haploid Cells:** These cells contain half the number of chromosomes (23 in humans). They are produced during meiosis.
- **Diploid Cells:** These cells contain the full set of chromosomes (46 in humans). They are typically the cells that undergo meiosis to produce haploid cells.

2. **Identify the Options:**
- The options given are:
1. Spermatogonial cells
2. Germinal epithelial cells
3. Secondary spermatocyte
4. Primary spermatocyte

3. **Analyze Each Option:**
- **Spermatogonial Cells:** These are the initial cells in the male gonad that are diploid (2n).
- **Germinal Epithelial Cells:** These cells are also diploid and form the lining of the seminiferous tubules in the testes.
- **Primary Spermatocyte:** This cell is diploid and undergoes meiosis to form secondary spermatocytes.
- **Secondary Spermatocyte:** This is the first haploid cell produced during meiosis, containing half the number of chromosomes (n).

4. **Determine the Correct Answer:**
- Among the options, the only group of cells that represents haploid cells is the **Secondary Spermatocyte**.

5. **Conclusion:**
- Therefore, the answer to the question is **Option 3: Secondary Spermatocyte**.