Question

Primary sex organ is
A.Ovary/Testis
B.Uterus/Seminal Vesicle
C.Breast/Beard
D.Spermatic cord

Answer 1

Hint: Sex organs are those parts of the body which are involved in sexual reproduction. These reproductive organs all combine to form the reproductive system of that organism.

Complete answer:
Primary sex organs of the reporductive system are those organs which are involved in the synthesis of sperms in males and ova or eggs in females. Let us analyze the options to find out the correct option.
Option A: The testis in male and the ovary in female are the primary sex organs as they help in production of sperms and ova respectively. Therefore, this is the correct option.

Option B: Uterus and seminal vescile are the secondary sex organs. Uterus is a hollow muscular organ which is located in the pelvic region of the females between the rectum and bladder. The fertilized eggs are implanted in the lining of the uterus throughout the course of gestation. The seminal vesicles produce many ingredients that form the semen. Therefore, this is the incorrect option.

Option C: Development of breast and beard are part of secondary sexual characteristics in females and male respectively. Breast is the mammary gland which secretes the milk on the infant's feet. Men develop a beard when they reach puberty. Therefore, this is the incorrect option.

Option D: Spermatic cord is a cord like structure in males formed by vas deferens and surrounding tissue. It is considered as secondary sex organ. Therefore, this is the incorrect option.

Hence, the correct answer is option (A)

Note: Eggs released by the ovary travels down the fallopian tube where it is fertilized by the sperm after which the fertilized egg is implanted in the uterus. The testes also produce the male hormone called testosterone.