Where do sperm cells attain fertilization competence and motility?

Options

A. rete testis
B. epididymis
C. vas deferens
D. seminiferous tubule

Answer

**Step-by-Step Solution:**

1. **Understanding Sperm Cells**: Sperm cells are the male gametes and are haploid, meaning they contain half the number of chromosomes compared to diploid cells.

2. **Identifying the Location for Competence and Motility**: To determine where sperm cells attain fertilization competence and motility, we need to look at the male reproductive system.

3. **Accessory Reproductive Ducts**: The sperm cells travel through various parts of the male reproductive system, including accessory reproductive ducts. One key structure in this system is the epididymis.

4. **Role of the Epididymis**: The epididymis is a highly coiled duct, approximately 6 meters long, where sperm cells mature. It is here that sperm gain motility and the ability to fertilize an egg.

5. **Conclusion**: Therefore, sperm cells attain fertilization competence and motility in the epididymis.

**Final Answer**: Sperm cells attain fertilization competence and motility in the epididymis.

---