Question

In a man, sperms move after ejaculation at a rate of nearly
A.2 to 4 mm/minute
B.2 to 4 feet/minute
C.2 to 4 inches/minute
D.2 to 4 cm/minute

Answer 1

Hint:Sperms are male gametes and are haploid that means male gametes consist of 23 chromosomes. In the neck region of sperm, a number of mitochondria are present which provides the energy to the sperm for swimming.

Complete answer:
The sperms are formed inside the male body under the influence of the hormone testosterone. This hormone is synthesized by the Leydig's cells in the testis. Leydig's cells are also known as interstitial cells. The process of the formation of sperm is called spermatogenesis.
Sperms are ejaculated from the male body along with the semen. Semen is a mixture of fluid from gonads glands like seminal fluid and sperms. Means semen consists of secretions from seminal vesicles, prostate gland, seminiferous tubules, and bulbourethral glands (Cowper's gland). Semen has alkaline pH and the pH value is between 7.2 to 7.7.
In an ejaculate, the average volume of semen is 2.5-5 ml. And this much amount of ejaculate consists of 200 TO 300 million sperms. By considering this number of sperms as \[100\% \]sperms, \[60\% \]sperms should have normal shape and size. That means out of \[100\% \], \[60\% \] sperms should be morphologically normal. Out of this \[60\% \] of sperms, at least \[40\% \] should have vigorous motility.

So, the correct answer is option A. 2 to 4 mm/minutes

Note:During the formation of sperm, many different abnormalities occur such as the formation of two flagella or the formation of sperm without flagella. The sperm reached the fertilization site within 30 minutes.