Q. A single ejaculation contains …A… to …B… million spermatozoa. Semen has pH of …C… to …D… . Its alkalinity helps to neutralize the acidity of urethra. Here A, B, C and D refers to
A) A-300, B-400, C-8, D-9
B) A-200, B-300, C-7.35, D-7.50
C) A-100, B-200, C-5, D-6
D) A-150, B-200, C-7, D-8
Explanation
Semen is collection of secretions from the seminal vesicles, prostate gland and Cowper’s glands and sperms from testis. A single ejaculation may contain 200-300 million spermatozoa (sperms) of which atleast 60% sperms must have normal shape and size and atleast 40% of them must show vigorous motility for normal fertility. Semen has a pH of 7.35-7.50; its alkalinity helps to neutralize the acidity of the urethra protects the sperms from the acidity of the vagina
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.