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 sperm 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.

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.
Thus, the correct answer is option (A), 'Sperm is viable for only up to 24 hours'.