One of the following cells secrete hormone

Options

A. Cells of Leydig
B. Cells of Sertoli
C. Primary spermatocytes `rarr` Secondary spermatocytes
D. Secondary spermatocytes.

Answer

**Step-by-Step Solution:**

1. **Understanding the Question:** The question asks which of the following cells secrete hormones. We need to identify the correct cell type from the provided options.

2. **Identifying the Options:**
- A. Cells of Leydig
- B. Cells of Sertoli
- C. Primary spermatocytes and secondary spermatocytes
- D. Secondary spermatocytes

3. **Analyzing Each Option:**
- **A. Cells of Leydig:** These cells are located in the interstitial spaces of the testes and are known to secrete hormones, specifically testosterone, which is an androgen.
- **B. Cells of Sertoli:** These cells support and nourish developing sperm cells but do not secrete hormones.
- **C. Primary spermatocytes and secondary spermatocytes:** These are stages in the development of sperm cells and do not secrete hormones.
- **D. Secondary spermatocytes:** Similar to primary spermatocytes, these are also involved in sperm development and do not secrete hormones.

4. **Conclusion:** The only cells among the options that are known to secrete hormones are the **cells of Leydig**. Therefore, the correct answer is **A. Cells of Leydig**.

**Final Answer:** A. Cells of Leydig

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