Question:

The correct sequence of spermatogenetic stages leading to the formation of sperms in a mature human testis is

Updated On: Jul 25, 2024

spermatogonia $\to$ spermatocyte $\to$ spermatid $\to$ sperms
spermatid $\to$ spermatocyte $\to$ spermatogonia $\to$ sperms
spermatogonia $\to$ spermatid $\to$ spermatocyte $\to$ sperms
spermatocyte $\to$ spermatogonia $\to$ spermatid $\to$ sperms

Hide Solution

Verified By Collegedunia

The Correct Option is A

Solution and Explanation

In human males, the primordial germ cells divide mitotically and produce spermatogonia. Some of the spermatogonia grow into large primary spermatocytes. Each primary spermatocyte undergoes first maturation division which is a reductional (meiotic) one. Thus, the primary spermatocyte divides into two haploid daughter cells called secondary spermatocytes. Each secondary spermatocyte now undergoes second maturation division which is a mitotic one. Thus, each secondary spermatocyte gives rise to two spermatids that undergo transformation to form two sperms. Overall, two secondary spermatocytes give rise to four sperms.

Was this answer helpful?

Questions Asked in NEET exam

View More Questions

Concepts Used:

Male Reproductive System

The male reproductive system contains the external genitals (the penis, testes and the scrotum) and internal parts, including the prostate gland, vas deferens, and urethra. A man's fertility and sexual traits depend on the normal functioning of the male reproductive system, as well as hormones released from the brain.

Read More: Human Reproductive System

Organs and functions:

The male reproductive system is responsible for reproduction. It is made of the following parts:

Penis — the organ used for urination and sexual intercourse. It has spongy tissue which can fill with blood to cause an erection. It contains the urethra, which carries both urine and semen.

Scrotum — this is a loose bag of skin that hangs outside the body, behind the penis. It holds the testes in place.

Testes (or testicles) — these are a pair of egg-shaped glands that sit in the scrotum, on the outside of the body. They produce sperm and testosterone, which is the male sex hormone.

Epididymis — this is a highly coiled tube that lies at the back of the testes. All sperm from the testes must pass through the epididymis, where they mature and start to ‘swim’.

Vas deferens — this is a thick-walled tube joined to the epididymis. It carries sperm from the epididymis up to the prostate gland and urethra.

Prostate gland — this is a walnut-sized gland that sits in the middle of the pelvis. The urethra runs through the middle of it. It produces the fluid secretions that support and nourish the sperm.

Urethra — this is a tube that extends from the bladder to the external opening at the end of the penis. The urethra carries both urine and sperm.

Seminal vesicles — these are 2 small glands above the prostate gland that make up much of the fluid in semen.