Question

Which of the following would be the correct path of a sperm on its way to fertilize an egg?
(i)Urethra
(ii)Epididymis
(iii)Vagina
(iv)Oviduct
(v)Vas deferens

A. (i),(ii),(iii),(v),(iv)
B. (i),(iii),(iv),(v),(ii)
C. (ii),(i),(iii),(iv),(v)
D. (ii),(v),(i),(iii),(iv)

Answer 1

Hint: The male reproductive system contains testes which contains seminiferous tubules. These are the sites for sperm production. Epididymis is present at the top of the testes. Vas deferens is the sperm duct attached to the urethra. The female reproductive system contains two oviducts which releases eggs.

Complete answer:
The male reproductive system includes the male reproductive system includes testes, epididymis, vasa efferentia, vas deferens, penis. All the parts of the male reproductive system plays an important role in the production and transport of the sperms. Sperms are the male gametes which are produced from seminiferous tubules in the testes.
Epididymis is the structure present on the top of seminiferous tubules. These help in the transport of sperms. The primary storage site for mature sperm and is continuous with a highly muscular duct called ductus deferens and also known as vas deferens.
After the production of sperms in the seminiferous tubules, they are transferred to the epididymis which is attached to the sperm duct or vas deferens. Vas deferens transfers the semen into the urethra. The male urethra conducts urine and semen from the bladder and ejaculatory ducts. It helps in the excretion of semen from the body.
During copulation the semen enters into the vagina through penis and passes through the cervix and uterus and finally reaches to the oviduct. The eggs released from the oviduct fuses with the sperms in the fallopian tube of the female reproductive system.
The correct path of a sperm on its way to fertilize an egg is seminiferous tubule-epididymis-vas deferens-urethra-vagina-oviduct.

Hence, the correct answer is option (D).

Note: The production of sperms occurs in seminiferous tubules by the help of hormone (testosterone) and the sertoli cells. The sertoli cells nourish the sperms. The female reproductive system also produces sex hormones: estrogen and progesterone which helps in the release of eggs and implantation of zygote. The fusion of the male and female gametes results in the formation of zygote.