Primary sex organ is

Options

A. Ovary/Testis
B. Uterus/Seminal Vesicle
C. Breast/Beard
D. Spermatic cord.

Answer

**Step-by-Step Solution:**

1. **Understanding the Question**: The question asks about the primary sex organ in humans. Primary sex organs are those that are directly involved in the production of gametes (sperm and eggs).

2. **Identifying Primary Sex Organs**: In humans, the primary sex organs are the testes in males and the ovaries in females. The testes produce sperm, while the ovaries produce ova (eggs).

3. **Analyzing the Options**: The options given are:
- A) Ovary or Testes
- B) Uterus and Seminal Vesicles
- C) Breast and Beard
- D) Chromatic Cord

Among these options, only option A (Ovary or Testes) refers to the organs that produce gametes.

4. **Conclusion**: Since the testes are the primary sex organs in males and the ovaries are the primary sex organs in females, the correct answer to the question "Primary sex organ is" is **Ovary or Testes**.

**Final Answer**: Primary sex organ is Ovary or Testes.

---