Question

Which one of the following statements is false in respect of viability of mammalian sperm?

• A. Sperm is viable for only up to 24 hours
• B. Survival of sperm depends on the pH of the medium and is more active in alkaline medium
• C. Viability of spern is determined by its motility
• D. Sperms must be concentrated in a thick suspension

Answer 1

Answer: (A)

Sperm is viable for only up to 24 hours

Answer 2

The sperm can stay viable for several days and not just for $24$ hours. Survival of sperm do depend on $pH$ and that to alkaline; hence the $pH$ of the semen is $7. 4-8$. Viability of sperm can be determined by motility. Sperms are suspended in seminal fluid or semen which is thick in nature.