| Primary Reproductive Organs | Accessory Reproductive Organs |
|---|---|
| The primary reproductive organs do not help in the development of baby. | The accessory organs help in the growth and development of egg up to the birth of baby. |
| The primary reproductive organs produce sex cells — the sperms and eggs. | The accessory reproductive organs help in the transfer and meeting of two kinds of sex cells leading to fertilization. |
| Example: Testes in males and Ovaries in females. | Example: Penis in males, Uterus, Vagina in female. |